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Sprayed on in two coats
Spray-applied and VOC-free. Easy to apply, only 2 coats.
TechCrete® 2500, distributed by Rafa Buildings in South Florida
Self-healing waterproofing that seals cracks from within.
What if your balcony and pool waterproofing never failed again? TechCrete 2500 works inside the concrete, so there is no surface membrane to crack, delaminate or re-coat.
Up to 30-year Labor & Material Warranty System, when installed by a TechCrete Certified Applicator.
3/4 in.penetration into the concrete
up to2 mmnon-structural cracks sealed
up to1.5 mmfuture cracks resealed
3/4 in.penetration into the concrete
2 mmnon-structural cracks sealed, up to
1.5 mmfuture cracks resealed, up to
~300projects served
~7years on South Florida job sites
30 yrLabor & Material Warranty System available, up to
6 hto 100% trafficable
How TechCrete 2500 works
The more water tries to get in, the stronger the barrier becomes.
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It goes 3/4 in. deep
TechCrete 2500 penetrates into the concrete and dries with no visible change to the surface.
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A gel membrane blocks the water
Inside the concrete, TechCrete 2500 forms a gel membrane. Water stops there.
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Water turns into gel
Using the calcium already in the concrete, a calcium silicate gel forms inside pores, cracks and capillaries.
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Cracks seal from within
Seals non-structural cracks up to 5/64 in. (2 mm) and reseals future cracks up to 1/16 in. (1.5 mm) whenever water tries to enter.
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The barrier keeps growing
The gel never stops growing. The water that was the problem now makes the waterproofing better.
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Open to traffic in 6 hours
100% trafficable within 6 hours. Tile, coatings or finishes go directly on top.
Why engineers & architects are switching
- Zero surface residueTile, coatings or finishes go directly on top.
- UL Classified + NSF/ANSI 61Certified for potable water contact.
- Up to 30-year warrantyLabor & Material Warranty available on the full system.
- Lower lifecycle costNo surface membrane to tear off and re-coat every few years.
What we sell the most
Our best sellers, by application.
GE silicones, Alchemco waterproofing and Mapei repair mortars for South Florida job sites. Order online or ask for a job quote.
GE SiliconesAlchemcoMapeiACRtecSoudalBalcoAquafinGAF
TechCrete 2500 on the job
Already proven on major Florida projects.
Also supplied: Palm Beach International Airport. Materials supplied by Rafa Buildings and applied by certified applicators. Digital building models are 3D renderings for illustration.
See the projectsWhy Rafa Buildings
Materials, paperwork and training from one distributor.
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Fast delivery
Materials shipped to your job site from our branches in Doral, North Bergen and Marietta.
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One source for the envelope
Waterproofing, facade sealants, glazing, roof coatings, air barriers and concrete repair.
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Brands on the spec
GE Silicones, Alchemco, Mapei, Soudal, Balco, Aquafin and more.
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Online store
Order sealants, coatings and accessories, usually by the box.
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Full technical package
TDS, CSI specs, CAD details and warranties for your submittal.
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Warranty you can specify
TechCrete system: up to 30-year Labor & Material, through certified applicators.
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Product training
New products, new technologies and new solutions, saving time and money.
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Lunch & Learn
A complimentary 30 to 45 minute session for your team, in person or on Zoom.
For engineers, architects and contractors
Complimentary TechCrete 2500 Lunch & Learn
We'd love to show your team exactly how it works, live and in person, with lunch provided. 30 to 45 minutes, or on a Zoom call.
- Crack-sealing demonstration
- Full technical package: TDS, CSI specs, CAD details, warranties
- Real project photos and independent test data
- Private Q&A
Condo associations and HOAs
Facing a milestone inspection?
Since Surfside, older buildings in Florida go through mandatory inspections. When repairs wait, associations can run into trouble renewing insurance, and unit sales can stall.
TechCrete 2500 protects balconies, pool decks, planters and garages from inside the concrete. We can walk your board and engineer through the system and the warranty.
FAQ
Common questions
Is Rafa Buildings a contractor?
No. Rafa Buildings is a materials distributor. We supply the products, the technical documents and the training. Installation is done by your contractor or, for TechCrete 2500, by trained applicators approved by Alchemco.
Where do you deliver?
We ship from our branches in Doral, FL, North Bergen, NJ and Marietta, GA. In Florida, most of our customers are in Miami-Dade, Broward and Palm Beach counties. For jobs elsewhere, call 1-888-671-8777 and we'll tell you what's possible.
Can I buy online?
Yes. Sealants, coatings and accessories are in our online store, usually sold by the box. TechCrete 2500 is priced by quote, so send us your project details.
Who can install TechCrete 2500, and what does the warranty cover?
It is applied by trained applicators approved by Alchemco. The full TechCrete system qualifies for a 30-year or 15-year Limited Liability Labor and Material Warranty when installed by a TechCrete Certified Applicator.
What happens at a Lunch & Learn?
In 30 to 45 minutes, in person with lunch provided or on a Zoom call, your team sees a crack-sealing demonstration, gets the full technical package, reviews real project photos and independent test data, and has a private Q&A.
Solutions for your construction
Tell us what your job needs.
Send your product list or project details and we'll get back to you with pricing and availability.
Catalog
Products
Best sellers come first. Ask for a quote on any product, or order online where the link is available.
Installation video
GE Elemax air & water-resistive barrier system
See how the Elemax system goes on a wall, from liquid flashing to the barrier coat.
Products / Concrete repair & joints
Mapefer 1K
Concrete Repair and Protection
Description
One-component, anti corrosion primer, cementitious mortar for steel reinforcement rods. TECHNICAL DATA: Maximum dimension of aggregate: 0.5 mm. Mixing ratio: 100 parts of MAPEFER 1K with 20-22 parts of water. Pot life of mix: approximately 1 hour. Minimum applicable thickness: 2 mm. Waiting time between each coat: approximately 2 hours. Waiting time before applying mortar: 6-24 hours. Classification: EN 1504-7. Storage: 12 months.
Application
Application: brush in two coats. Consumption: 100 g/m for 8 mm diameter rebar (2 mm of product applied). Packaging: boxes of 4×5 kg bags.
Waterproofing agent by Alchemco
TechCrete®2500
It works inside the concrete, forming a permanent, self-healing subsurface barrier that seals existing cracks up to 2 mm wide and automatically reseals future cracks up to 1.5 mm whenever water tries to enter.
Technical summary
With TechCrete 2500
A bio-based, gel-forming, modified silicate with nearly 40 years of success. It uses the calcium contained in the concrete to form a calcium silicate gel within pores, cracks and capillaries.
- Penetration
- 3/4 in. into the concrete. Dries with no visible change to the surface.
- Existing cracks
- Seals non-structural cracks up to 5/64 in. (2 mm)
- Future cracks
- Reseals future non-structural cracks up to 1/16 in. (1.5 mm)
- Traffic
- 100% trafficable within 6 hours
- Application
- Spray-applied, VOC-free, only 2 coats
- Certifications
- UL Classified + NSF/ANSI 61
- Finishes
- Zero surface residue. Tile, coatings or finishes go directly on top.
- Warranty
- Up to 30-Years Labor & Material Warranty System
The full system qualifies for a 30-year or 15-year Limited Liability Labor and Material Warranty when installed by a TechCrete Certified Applicator.
Rafa Buildings is a distributor. TechCrete 2500 is applied by trained applicators approved by Alchemco.
Miami-Dade County, Florida NOA No. 25-0904.05. Expires 05/13/2027.
Inside or on top
Traditional surface membranes crack, delaminate and demand re-coating.
Surface membrane
Sits on top of the slab, where movement and water can tear it. Costly re-coating every few years.
TechCrete 2500
Works inside the concrete, as a permanent, self-healing subsurface barrier.
Where it goes
For use on
- Parking garages & parking decks
- Rooftops & podium decks
- Plaza decks
- Balconies
- Planters
- Terraces
- Facades
- Water tanks & swimming pools
- Wharf decks & marine structures
- Airport runways, taxiways, aprons
- Specialty applications, elevator pits
- Precast elements & panels
- Tiled shower recesses
The complete system
TechCrete 2500 and its system products
Used together with the surface preparation products, TechCrete 2500 forms the complete protection system that qualifies for the warranty.
Lunch & Learn
See it seal a crack in front of your team.
A complimentary 30 to 45 minute session, with the full technical package.
TechCrete 2500 on the job
Projects
Credibility comes from job sites. These are some of the Florida projects that used TechCrete 2500 supplied by Rafa Buildings.
Miami International Airport
Parking garages.
Rooftop pool, Hollywood, FL
250,000 gallons. Zero leaks after full water test.
Lincoln Road, Miami Beach
Parking garage.
Hilton Miami Beach
Swimming pool deck, planters, balconies, terraces and more.
Broward Health Hospital
Waterproofing with TechCrete 2500.
Palm Beach International Airport
One more South Florida project on the map.
Materials supplied by Rafa Buildings and applied by certified applicators. Digital building models are 3D renderings for illustration.
About us
Solutions for your construction.
Rafa Buildings Solutions, Corp. is a building materials distributor with branches in Doral, Florida, North Bergen, New Jersey and Marietta, Georgia. We supply waterproofing systems, silicone sealants, structural glazing, roof coatings, air barriers and concrete repair products to contractors, applicators, engineers and property managers.
We don't install. Application is handled by your contractor or by trained, approved applicators. We provide the materials, the technical package and the training.
Training about new products, new technologies, new solutions for construction, saving time & money.
Contact
Talk to us
Phone
1-888-671-8777
(561) 939-2727 Office
info@rafabuildings.com
bruno@rafabuildings.com
Branches
Doral, FL
1360 NW 78th Ave
Doral, FL 33126
305-390-8888 · Map
North Bergen, NJ
7001 Anpesil Dr, F1
North Bergen, NJ 07047
201-499-8626 · Map
Marietta, GA
2252 Northwest Pkwy SE, Suite C
Marietta, GA 30067
404-566-2031 · Map
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