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1
CSLB 864095
DelGrosso Design Custom Concrete & Restoration
Catalog of Products and Services
www.delgrossodesign.com
2
HISTORY - The Company was founded in California in 2002 by Andy DelGrosso after more than
10 years of being in business in Northern Italy (Lake Como), where he was born and raised.
Andrea's (Andy's birth name, like Bocelli, the Italian opera singer) construction background
goes back to when he was 16 and, following the footsteps of his grandfather and his dad,
started building with stone and concrete. Over the years he developed his own artistic talent,
as well as a strong sense of business. In 2002 he moved to San Francisco Bay and he
established his company in Santa Rosa, where he resides with his family. OUR WORK - All our work is hand-made with passion and superior mastery. Going through our
website and pictures' gallery you will see how unique our projects are. They are always
developed with and for our clients, in this way achieving a complete customer satisfaction.
Our Unique designing style is rich with Italian and Mediterranean touches. In the last years
Andrea and his wife Christine led the family owned business toward a more specialized
residential clientele, where the unique designing and coloring styles can be more
appreciated. Since 2008 we are also serving commercial clients, from retail stores to
warehouses, including industrial spaces.
OUR COMMITMENT - Our philosophy is to continually grow the company performing excellent
and unique work and offering a superior customer service. Our dedication to our customers
shows in the details of every project. Our goal is to always exceed our clients' expectations.
Our values of honesty, reliability, great performance and clean look, makes of our company
"one of a kind". All our employees are trained and insured through the State Fund Workers'
Compensation. Over the years we have built a solid reputation based on all these facts.
OUR LOCATION – DelGrosso Design is located in Santa Rosa’s Valley of the Moon, in the heart
of the wine country. We mostly operate in Sonoma, Marin and Napa counties and in the City
of San Francisco. Because of the unicity and quality of our services we are often requested
outside our territory (East Bay, South Bay, Coastal areas of Sonoma and Mendocino Counties,
Lake County). Feel free to inquire with us for projects in these areas, we evaluate each
individual project and will supply a preliminary estimate by email. A Project Information Form is
available at our website “Contact” page.
Contact:
Andy DelGrosso (owner, estimator)
C 707 – 318 – 2705
O 707 – 537 – 8752
eFax 707 – 324 – 8888
CSLB license 864095
email: [email protected]
Copyright DelGrosso Design 2014 – All photographic material in this catalog is property of
DelGrosso Design. Use and reproduction without written authorization are prohibited.
3
D i a m o n d P o l i s h e d C e m e n t O v e r l a y
This is among the most beautiful, innovative and durable floors available on the
market. Unlike most classic epoxy terrazzo floors, our product is made with a cement
matrix and does not require use of aggregate. The result is a stunning floor with the
feel and durability of diamond polished concrete and an unmatched mirror
reflectivity. Colors can be completely customized by using integral pigments and
color dyes. Although this floor is engineered for commercial and industrial high traffic
applications, it is now widely requested by homeowners that want to make a
statement with their floor and are looking for a superior performance.
The process – Once the existing structural concrete slab has been properly repaired and
prepared by grinding or shot-blasting, an epoxy ”bond” layer with sand to refusal is applied, zinc or
brass divider are installed to allow proper expansion and contraction of the structural slab, then a 3/8”
(sometime ½”) layer of high strength engineered cement is installed. DelGrosso Design preferred
product is CTS Rapidset TRU Self-leveling Cement, but other products (Ardex SDT, Mapei UltraTop
PC) can be used as matrix if specified by architects. Once the cement is installed, it is diamond ground
and polished to a mirror reflective look. A lower sheen is also possible, whenever requested.
Stenciling – Your floor can be
further customized by adding a logo or
custom wording. The graphics are hand-
made on the floor by using color dyes
and vinyl masking stencils which we
manufacture form a high-def PDF file
provided by client. We can also create
unique designs using saw cut lines and
engraved patterns.
Color selection – Ameripolish makes a line
of integral pigments (OS System) and penetrating dyes
(Surelock Dyes) especially formulated for TRU self-
leveling cement pigmentation. With a combination of this
two coloring products it is possible to completely
customize the look of your floor.
Aggregate – Unlike the classic
commercial grade terrazzo, our floor
does not require the use of stone
aggregate. Nevertheless, it is possible to
add colored glass, reflective glass, quartz
or marble chips with the cement matrix
and create unique and stunning effects.
Durability – The durability of our cement terrazzo floors is extreme. The diamond polished
surface creates one of the most resilient and easy to maintain surface on the market and in time
performs much better than any epoxy or industrial coating on the market.
4
Concrete interior floors are becoming nowadays more and more in demand, most of
all on high-end residential settings. Homeowners are often seeking that unique
character that concrete floors offer. No matter what style is your home, we can
create the perfect floor slab to complement your design, modern or classic. Pouring
an interior finished floor slab requires more skills, attention to detailing and planning
than any standard outdoor concrete. It is very important to plan details like concrete
mix design, radiant heat system, finishing technique, size of crew, colors and finishes,
and that’s where DelGrosso Design experience and knowledge come in as
determining factor.
Topping slabs – These are floors
poured on top of existing subfloor, typically a
structural slab or plywood subfloor. Concrete
(unlike cement and engineered cements) needs
a minimum thickness in order to maintain
structural integrity. Whenever possible we
recommend a 2-1/4” thickness over the substrate
highest point. Less than 1-3/4” the topping slab
will lack structural strength, so in these cases the
use of engineered cements is recommended. ¼”
welded wire sheets are always embedded in
topping slabs to increase the strength and
provide structural integrity in case of cracking.
Structural slabs – This type of floor
slabs have to provide a much higher strength
than topping slabs and at the same time
provide an appealing finish. This combination
of factors sometime limits the type of finish
that can be achieved. Often details such as
control joints design and trowel finish are
under looked by companies specializing in
structural concrete, creating issues during the
floor refinishing phase. At DelGrosso Design
we’ll be able to work with your general
contractor, architect and designer to create the
proper mix and procedure for your floor.
5
Diamond polished finish – This
finish creates one of the most beautiful and
durable surfaces for concrete floors. The slab is
grinded and polished with special equipment and
by a trained crew. Our diamond polished floors
are unique and completely customized to our
client expectations. When a diamond polished
finish is desired, the floor slab must be poured
following a specific procedure, often unknown to
most concrete contractors. Consult with
DelGrosso Design when planning for a diamond
polished finish.
Control joints – These are grooves in the concrete slab (topping or structural) which create a
point of weakness, allowing the cracks to form into the groove, therefore remaining unseen. On most
interior slabs control joints are saw-cut with diamond blades after the pour. Many concrete installation
company are not familiar with this techniques and often do not install joints of any kind at all, or they
would use grooving tools like is done on standard outdoor concrete. This often creates issues when
the floor is further refinished, most of all with diamond polished floors. Saw-cut joints can be backfilled
with colored caulking or colored polyurea.
Cracking – The appearance of cracks on interior concrete is usually due to lack of control joints
design. Even if the joints are properly designed and installed, hairline cracking can still happen. In this
case they can be backfilled with colored caulking or other elastomeric products during the
refinishing/polishing phase.
Integral Pigments – Whenever a
coloration is desired, integral pigments can be
added to the concrete mix at the plant. Davis
Colors is the main manufacturer in the USA of
integral pigments for concrete. A color chart is
available for our clients; it is also possible to order
3” x 3” color chips directly from the manufacturer.
Samples, chips and charts should not be intended
as a representation of the actual concrete color or
finish, but only as an instrument to determine the
proper pigment to use. The final color will be
determined by the interaction of the pigments with
the specific concrete mix. Factors like aggregate
size and provenance, substrate moisture,
temperature and more can and most likely will
affect the final result.
On site mockups – We highly
recommend the construction on site of
mock-up. Most time the size will be 3’x3’ or
4’x4’. The mock-ups should be used to
preview different colors, finishes, sealers
and other important details. They should be
constructed and maintained on site in
conditions as similar as possible to the
actual floor. In other words, if a mock up is
built outdoor for an interior floor, after weeks
or months of exposure to the outdoor
elements the mock up will develop
differences just because it is in a different
location. Once again, mock ups can only be
so similar to the actual floor, differences are
normally happening on most projects.
6
Today polishing is becoming the most finish on commercial floors. This operation
consists of grinding and refining a concrete surface with progressively finer diamond
grit. The diamonds are contained in special "polishing discs" and are embedded into
a metallic, ceramic or resin matrix. During the polishing operation the concrete
surface becomes harder and tighter, creating the most durable finish available on
concrete, in excess of 10,000 PSI.
Since 2010 DelGrosso Design is a Superabrasive (TM) certified floor preparation and
polishing contractor. We are licensed (CSLB 864095) and insured. All our equipment is
designed for industrial polishing and we use only Made in USA and EU high quality
diamonds. DelGrosso Design is a local family owned and run business with a proven
reputation of high quality, honesty and reliability. All our work is performed with
knowledge and professionalism for a long lasting customer satisfaction.
Advantages of polished
concrete
- Extremely durable surface.
- Very low maintenance,
- Easy to clean surface
- Can be done to most existing concrete
- Highly attractive look,
- Completely customized look
- High reflectivity of surface saves 40%
on lighting bills
- Very environmentally friendly.
What can we polish?
Manufacturing plants, Warehouses facilities, Retail
stores, Shopping centers, Offices, Automotive shops,
Showrooms, Garages and Gyms, Department stores,
Groceries stores, Schools and hospitals, Healthcare
facilities, Restaurants, Hotels, Storage facilities.
7
Everyday more homeowners are switching to a polished finish for their concrete floors.
Either on a new topping slab or on an old structural slab, the polished finish has a
unique character. Our diamond polishing process merges the old fashioned warmth
and the modern technical progress into an unmatched finish.
Besides durability and ease of cleaning, another advantage of polished concrete is
the complete customization in sheen and color. Extreme decorative features like
stenciled designs, borders and color effects can be added during the polishing
phase. On each project we’ll work with the owners to determine the wanted color
and sheen, the amount of detailing required, define and customize the process to
meet the owner’s needs. Our goal is to exceed the client’s expectations and make a
floor that we can be proud off and the owner wants to show off.
Polished coatings and Self-leveling coatings – Whenever the structural
conditions of the existing floor slab are not suitable for a direct surface polishing (also called “grind &
polish”), an especially engineered high strength cement coating can be applied to the surface and then
polished. This process requires a few additional preparation and refinishing steps, but creates an
incredibly attractive and durable floor.
8
H i g h s t r e n g t h c e m e n t o v e r l a y s
Our cement floors are built with a variety of high quality engineered products,
including polymeric modified cement, self leveling cement, high strength cement and
more. Several finishing styles are available, including Troweled finish (light texture),
Sanded finish (smooth texture), Self-level cement finish (light to smooth texture) and
Metallic pigmented epoxy finish (smooth texture, glossy).
Our cement floors can be installed over a multitude of substrates, but mostly
concrete, and ceramic tiles. When a plywood subfloor exists, backer board needs to
be installed for proper bonding and performance. The finished floor thickness normally
varies from 1/16" to ¼”. It is possible to build up where necessary to reach a proper
finish grade.
All our interior floors include installation of protective clear sealer. All our sealers are
VOC compliant (VOC<100). The choice of sealer will affect the final look and sheen of
the floor. The application of sealer insures protection to the color and offers a window
of intervention to clean spills.
Self-leveling cement
topping – This type of floors
creates a beautiful and durable
surface very close in look and feel
to a concrete slab. Once the
substrate is properly prepared, the
self-leveling cement is applied with
special rubber edge trowels in a
thickness of appx 1/8”. Once is
dry, the surface is lightly sanded to
remove trowel marks and leave a
very smooth finish. Since this layer
is quite thin, the floor will still have
the profile of the existing slab, but
it will provide a brand new canvas
for a custom staining and sealing
work. This finish is recommended
for residential and light commercial
spaces. The protective sealer will
require maintenance applications
to maintain in top shape over the
decades to come.
9
Staining a concrete slab is one of the most cost effective ways to improve its
appearance, also to create a peculiar look, a marbled finish and antiquing effects. It
is misconception that concrete stains can be used to cheaply restore damaged,
worn or defective concrete. When the concrete surface is sealed, painted,
discolored, worn out, structurally weak, contaminated or has glue on it, the staining
alone will not be a suitable mean of restoration. Additional operations are in this case
necessary prior to staining, like grinding or resurfacing the slab.
Type of Stains - Most water based stains are semi-transparent, when applied to the surface
will penetrate into the concrete through the pores adding a tint. They will not cover existing defects or
discolorations. Some acrylic based stains can be applied in multiple thin layers to cover the entire
surface. These stains are very effective in rejuvenating the concrete appearance, but most likely will
not have a long lasting performance. Acid stains are reactive stains containing diluted muriatic acid,
which will etch the concrete while the pigment penetrates into the slab.
Color selection – Most manufactures
supply a color chart for their lines of products. The
color chart should be used to select the “pigment”,
not as a representation of the final concrete look,
tone or appearance. Many factor such as existing
color of the concrete, color of the aggregate,
composition of the slab, layout, temperature and
other factors will contribute to achieving every
time a unique coloration, often different from what
seen in the color charts. It is highly recommended,
whenever possible to apply the stain (or multiple
stains combination, also called “formula”) in a
sampling area.
Sealer – Stained concrete must be sealed
to prevent accidental staining and
contamination of the surface. The sealer will
also extend the performance of the stain by
protecting the surface from fast wearing. The
frequency depending on the sealer selection,
maintenance applications are normally
necessary to keep the aesthetics to top levels
of performance.
10
w i t h C o l o r J u i c e a p p l i c a t i o n
This restoration process on outdoor concrete will produce a look very similar to interior
diamond polished floors. Most times on outdoor projects the final sheen would be
lower than a typical interior diamond polished surface, but the process, as well as the
equipment used, would be in many parts similar on both settings.
The process
Grinding – This operation will level the high spots on the slab removing the top layer of sealants,
cement, color dye, paint, epoxy, stains and dirt previously penetrated into the surface. As we say in the
trade, will “cut” the surface to prepare the concrete for color dye or stain application and sealer
application. The grinding is done with specifically designed planetary floor grinders. These grinders are
electric or propane powered walk-behind machines on which are mounted diamond encrusted metallic
buttons, called “metal bond diamond buttons”. Most grinding is performed with 30 grit buttons. The
grinding is often a very slow process and can easily take days even for smaller size projects. After the
concrete is grinded, the grinding marks (swirl marks) will be removed with 70 and 120 grit diamond
buttons. The grinding process will expose the stone aggregate contained just below the surface.
Sometimes also exposes defects contained into the slab, so a certain amount of repair work is
normally needed on most outdoor concrete slabs.
Sealer – Our sealer of choice is Ameripolish X Link WB (water based, VOC compliant penetrating
sealer). This penetrating product will plug the concrete pores rather than making a thick plastic film
over the concrete, like other sealers do. As the manufacturer explains, the sealer will create “a
window of opportunity that allows cleaning of spills”. In certain situations, when the concrete is
ground to a very smooth finish, this sealer would allow high-speed burnishing. This operation
increases the sheen and strength of the sealer.
Staining – Once the surface is prepared and
cleaned, a color stain can be added to create a
completely customized look. Although other products
are available on the market, our coloring system of
choice is Ameripolish Color Juice. The formulation of
these high quality stains and pigments, in conjunction
with highly skilled craftsmanship, will produce
extremely beautiful and durable results. Most often
we prepare on-site mock-ups and samples to
properly preview the final look. Color Juice stains are
UV stable and will not fade or yellow with time.
11
Maintenance – Our Outdoor Grind&Polish concrete is beautiful and very durable. Periodic re-
application of X Link WB sealer is recommended in most situations to maintain the concrete protected
and keep it performing at best. This operation is very cost effective, quick and simple. The resealed
concrete can be open to traffic in as little as 1 hour. The reseal operation should be performed more
often in high traffic settings or when pressure washing is performed multiple times a year.
Expansion joints – Old outdoor concrete slabs often have wooden expansion joints
embedded in it. Most times the wood boards, often 2x4 lumber, are in bad conditions and need to be
removed. The voids left are then backfilled with concrete or other engineered cement products.
Sometimes the layout and design of the wooden control joints makes more difficult achieving good
aesthetical results, and can affect the final look.
Diamond tools –
The quality of the diamond
tools (metal bond buttons,
resin and ceramic bond pads,
brazed pads, buffing pads) is
extremely important. Cheap
diamond tools often are made
with grit that has not been
perfectly screened, and the
quality of the final product will
be affected. They will also last
less or not properly abrade the
surface. We only use high
quality made in USA or Made
in Europe diamond tooling.
DelGrosso Design uses
Superabrasive Lavina grinding
and polishing equipment with
Ermator Dust Control systems.
We are Superabrasive
Certified Floor Refinishing
Contractors.
Personnel – Some operations during a grinding and
polishing project are repetitive and slow. Many phases, though,
are critical and should be performed only by trained personnel.
Each project will offer a generous dose of unforeseen and
challenges, no matter how straight-forward it seems to be. Our
crew is highly trained and able to make decisions on the spot
and is always in contact with our project manager.
12
P o l y m e r m o d i f i e d c e m e n t o v e r l a y s
All our resurfacing installations include substrate pressure washing, priming if
necessary, base coating(s), textured and colored top coat, custom staining and
sealer, unless any exclusion is expressly stated in our contracts. Each project is
customized to meet our clients’ specifications and requests. We use only high quality
cements, additives, pigments and sealers. The choice of the materials will largely
depend on the wanted finish and on the existing situation. Additional preparation
steps may be necessary in some cases. Our cement coatings can be installed on
existing “sound concrete” (a concrete structure with no critical structural damage.
Cracks, uplifted or sunken sections of slab can be repaired in some cases prior to
cement coatings installation), clay brick if the bricks are installed with mortar on a
concrete substrate, gypcrete or other engineered cements’. When installing on
plywood or other wood structures, the substrate will need to be prepared with a
waterproofing membrane and/or a layer of cement board. Because of durability and
higher protection, on outdoor overlays we only use high gloss lacquer based sealer.
Texturing styles
Steel Trowel texture – The top
coat of cement is lightly textured by dragging
the trowel on the cement surface. This style
creates a light texturing, suitable for patios,
home entrance, garages and interior floors.
Knock Down texture – The top
coat of cement is lightly textured by tapping
the trowel on the wet cement. This operation
heavily corrugates the surface. The heavy
texture is later sanded down with diamond
pads, leaving a softer texture. This style
resembles the “slate stamping” made on new
concrete slabs but offers better grip in areas
where higher safety is requested, such as
pool decks, hot tub pads, patios exposed to
rain or wet conditions. The sanding process
in combination with the application of color
stain creates a very unique look.
13
Stamped Slate – This texturing style
is achieved by stamping with rubber mats the
cement surface before it completely dries. We
use seamless slate stamping mats, on which
the stamping surface is the reverse of the
texture left on the cement. Liquid release
agent is used to allow a streak free removal of
the stamping mat. This style is more labor
intensive than the trowel textured styles, often
is used in combination with flagstone or
ashlar designs.
Flagstone Mosaic – This style
requires the installation of two colored cement
layers. The first layer makes the grout line
between flagstone shapes. The second (top)
layer creates the flagstone shape. Special
high strength tapes are set over the grout
layer to design the stone shapes. After the top
coat is applied, the tapes are pulled,
uncovering the grout layer underneath.
Normally a multiple tones stain is applied by
hand to the individual stone shapes. This
style is very effective on patios, interiors, even
vertical surfaces like walls and columns.
Random Ashlar Designs –
This style is often used to create inlays or
accent areas. As for the “flagstone mosaic”
style, we use high strength nylon tapes (1/4”,
½” and ¾” width) to create a completely
customized “grout lines” design. Normally the
top layer is textured to a “steel trowel”, “knock
down” or “stamped” finish, and an accent
patina is applied. This style is unique to our
company and most requested by client.
Other styles
Cracked Stone – Whenever the
concrete substrate presents heavy cracking,
we incorporate the repaired cracks into a
design made of hand carved score lines. The
cracks now are undistinguishable from other
decorative lines, but the substrate is allowed
to move along the fractured lines. Most often
the score lines are backfilled with colored
caulking for extended durability. Not
recommended for driveways and slabs
subject to heavy loads.
Wavy Lines – A freestyled design is
created by our skilled installers by using a
hand-held grinder equipped with a diamond
blade. This style is very effective most of all
when used in conjunction with multiple colors
stains.
14
Stamped is one of the most beautiful finishes for modern concrete. Technologically
advanced tools and materials are allowing a complete customization and long
lasting durability. Stamped concrete is a multi-phase installation that requires a highly
trained crew with proven years of experience. Atmospheric and weather conditions,
as well as micro-ambient conditions often impact the installation of stamped
concrete. Only a small window of time is open for the actual stamping operation,
which only happens when the concrete surface is hard, but not yet completely dry.
Size of the installation crew, amount of square footage per pour and many other
details must be considered when planning for a stamped finish.
Our installation process – After proper grading and substrate compaction, forms are
installed along the perimeter of the concrete slab. On pools and spas Styrofoam profiled forms (mainly we use Stegmeier products) can be anchored on the tiles border for cantilever coping construction. Several shapes are available at customer choice; the most used on pools is the “Sandstone” (round bullnose). Temporary forms are also installed for construction joints, steps and curbs. The concrete is then poured from a concrete delivery truck into a concrete pump and hosed to the pour area. Sometime concrete can be poured directly on the ground from the truck chute (also called “tailgating”). As soon as the concrete is poured it undergoes “screeding” (a rod or wood plank is dragged on the concrete to level it) and “bullfloating” (further flattening of the concrete surface with a large wood or magnesium float mounted on a pole). This last operation also opens the top of the concrete allowing “bleeding” (excess water coming to the surface). The next step is the smoothing of the concrete surface with a Fresno trowel (large trowel mounted on a pole). Once the concrete is set enough, finishers are troweling the surface one more time. The Fresno and the hand troweling will build the “cream”, which is 1/8” thick top layer rich in Portland cement and fine sand. The trowel action also pushes the larger aggregate down below the surface.
Coloring – Color can be mixed at the plant with the concrete and delivered ready-mix to the site
(integral coloration). This method shortens the installation time allowing for larger pours, the cost will largely vary depending on concrete mix features and wanted color. Color can also be added on the wet concrete surface at the moment of the pour (topical coloration, dusting, Hardener/release method). This technique is more labor intensive but offers more control on final coloration; Color Hardener also creates a very hard surface (3500 PSI), with compression strength higher than standard concrete. A combination of integral and topical coloration can be used to create peculiar effects. Finally, color can be added after the pour and after initial curing in a form of stain. This operation is mostly done on colored concrete to create accents or artistic displays. It is also possible to color uncolored standard concrete directly with a stain (semitransparent pigment); this is often done for restoration on older but structurally sound concrete. Our coloring systems are all UV stable and suitable for indoors and outdoors. Construction of on-site mock-ups is recommended whenever a specific color tone is required by customer or architect.
15
Stamping patterns/textures – On stamped concrete the texture is imprinted on the
concrete surface by rubber mats with the reverse of the wanted texture. A large variety of stamping mats is available on the market; most commonly we use “Seamless slate”, “Ashlar cobblestone” and “Flagstone”. Seamless stamping mats don’t have a repeating pattern and will only imprint a texture to the concrete. Patterned mats are coming in sets made of 5, 7, 9 or more interlocking mats. Often two or more sets are needed on larger projects to allow proper finishing. In order to allow a streak-free removal of the stamping mat, the concrete surface needs to be covered with “liquid release” agent (transparent) or Antiquing Release (colored powder that creates accent coloration).
Sealing – Stamped concrete must be sealed to protect the color from wearing and most of all from
accidental staining and contamination. Sealed concrete will perform much better over time, maintaining the anticipated beauty for decades. Maintenance recoating is always necessary, the frequency largely depending on type of sealer and usage of the concrete.
Efflorescence – This is a common issue with concrete slabs. Efflorescence is a white powder
that forms on the surface of concrete but also masonry, plaster and brick. This powder is made of mineral salts that are contained into the concrete (or mortar, plaster…) and come to the surface brought by moisture. Bad cases of efflorescence are quite common in slabs exposed to high substrate moisture. Efflorescence usually forms in the first 3-4 weeks after pouring, so it is important not to seal the concrete until all curing is completed. Efflorescence is quite easy to remove, unless it is trapped under a sealant. In this case the sealant must be removed in order to remove the efflorescence, which can be a difficult and costly process.
Cracking – Control joints (grooves or cuts in the concrete) must be installed in order to relief the
expansion and contraction stress to which every slab is subject. Most critical stress points are corners against columns, foundations, pools and other rigid structures. Control joints are points of weakness purposely and specifically created in the slab to allow cracking in non-visible spots. Saw-cut joints are recommended for some finishes (mostly polished concrete) or in slabs where joints must be installed at close distance (4x4, 5x5 grids) or for aesthetical purposes. Typically patterned stamping (ashlar, flagstone…) does not allow for a tight joint design, so more tolerance for cracking should be allowed. The cracking does not create a structural damage if proper reinforcement is installed. Cracks can be easily sealed with colored sanded caulking or similar waterproofing material to prevent moisture penetration and sub sequential corrosion of the steel. On decorative concrete, unlike for structural concrete, even if left unsealed for years hairline cracks will not cause a major failure. Cracks larger than 1/8” are normally considered structural damages and are usually symptom of lack of proper reinforcement or improper installation. An analysis must be made on a case-to-case basis and a certain amount of random cracking is normally tolerated in most concrete flatwork.
16
Email us this form filled in to request an estimate. Please attach pictures of the existing
floor area, PDF set of plans with dimensions and other available information.
A PDF copy of this form can be downloaded at our website “Contact” page.
Copyright DelGrosso Design 2014 – All photographic material in this catalog is property of
DelGrosso Design. Use and reproduction without written authorization are prohibited.
DelGrosso Design - (707) 537-8752 - [email protected]
Contact info
ADDRESS (SITE)
CROSS STREET
HOME PHONE Referred by:
OFFICE PHONE
FAX
CELLULAR Email:
Project Type
Commercial Residential Public/Government
Existing substrate/floor
No structural substrate Concrete slab Plywood subfloor
Existing cover (tiles, carpet, concrete, VCT..)
Substrate structural condition:excellent good needs repair poor
Wanted Finish - Other specs
Grind&Polish 800 grit (diamond polished finish) ….……. Existing control joints are tooled
Cream polish (only on smooth, clean slabs) ……………. No control joints
Honed finish 100 grit (low sheen) …………………………
Mirror sheen 3500 grit (highest sheen) ………………….. Baseboard is removable
Cement terrazzo (1/2" diamond polished overlay) ……... Walls are painted
Stain&seal …………………………………………...…….. Walls are stucco
Cement overlay …………………………….………………. Area accessible only though stairs
Outdoor Grind&polish system (with Color Juice) ……….
Stamped concrete …………………………………………. Existing concrete has integral color
Outdoor Resurfacing ………………………………………. Existing concrete is stained
Other requests/specs
Project description
PROJECT INFORMATION SHEET