House Painters Houston TX • Elastomeric Coating Contractor
Elastomeric Coating Systems
Elastomeric coatings are not paint — they are a waterproof membrane. Houston elastomeric coating crews who apply the correct mil thickness, prime the substrate correctly, and deliver a system that bridges cracks and resists Gulf Coast weather.
Executive Summary: Elastomeric Coating Systems
Elastomeric coating systems are high-build, crack-bridging exterior coatings applied to masonry, stucco, concrete block, and EIFS substrates. Unlike standard exterior paint, elastomeric coatings form a flexible waterproof membrane that bridges hairline cracks and accommodates thermal movement without cracking.
Standard elastomeric system: pressure wash + crack fill on any opening wider than 1/16 inch + elastomeric primer on masonry substrate + 2 coats of high-build elastomeric at manufacturer-specified mil thickness. A properly applied elastomeric system: 10–15 years. Estimated cost: $3,500–$35,000 depending on square footage.
Elastomeric coatings fail when applied too thin, applied over contaminated surfaces, or applied without the correct masonry primer. The mil thickness matters — a coat applied at half the specified build does not bridge cracks or provide the rated waterproofing. We apply at correct mil thickness, confirmed with wet-film gauge.
The Fast Facts on Elastomeric Coating Systems
What does an elastomeric coating system cost?
The short answer is an estimated $3,500 to $35,000 depending on surface area, substrate type, and number of coats required. Stucco single-story homes at the lower end; large masonry commercial exteriors or multi-story applications at the upper end. All pricing confirmed after an on-site assessment.
What surfaces are appropriate for elastomeric coatings?
The short answer is masonry, stucco, concrete block, brick, EIFS, and smooth fiber cement. Elastomeric coatings are not appropriate for wood siding, lap siding with open joints, or surfaces where moisture is trapped behind the coating. We assess substrate suitability during the estimate walk and confirm the correct product selection.
How long does an elastomeric coating last?
The short answer is 10 to 15 years when applied at the correct mil thickness over a properly primed masonry substrate in Houston conditions. Standard exterior paint on the same surface lasts 6 to 8 years. The longer cycle justifies the higher initial cost for most masonry homes.
Typical Houston Elastomeric Coating Systems Projects
Three recent projects across Greater Houston.
Stucco Elastomeric System — Sugar Land (77479)
November 2025 · 2,600 sq ft stucco with active hairline cracking. Crack fill on all openings over 1/16 inch, masonry primer, 2-coat high-build elastomeric at 20 mil WFT. Crack-bridging confirmed at application. Surface waterproof at 6-month water test.
Masonry Block Commercial Building — Westchase (77042)
September 2025 · 8,000 sq ft single-story commercial masonry. Previous paint failing in large sections. Full removal, elastomeric primer, 2-coat system. Surface clean and crack-bridging confirmed at 12-month check.
EIFS Repaint — Memorial (77079)
February 2026 · 3,200 sq ft EIFS exterior. Previous standard acrylic failing at EIFS joints. EIFS-compatible primer, high-build elastomeric topcoat. Joints reinforced with fiber mesh tape before coating.
All prices are estimates. Final scope confirmed in your written quote before work begins.
Elastomeric Coatings Fail When Applied Wrong
Coating cracking and peeling within 3 years
Applied too thin or over a contaminated surface. Elastomeric coatings must be applied at the manufacturer’s specified wet-film thickness — typically 10 to 20 mil WFT. Applied thin, it behaves like a rigid paint and cracks. We check mil thickness during application with a wet-film gauge.
Blistering under the elastomeric coating
Moisture trapped behind the membrane. Elastomeric coatings applied to substrates with active moisture intrusion blister as vapor pressure builds behind the membrane. The substrate must be dry and the moisture source addressed before elastomeric coating is applied.
Cracks larger than 1/16 inch reappearing through the coating
Elastomeric coatings bridge hairline cracks up to 1/16 inch. Structural or settlement cracks wider than 1/16 inch require fill before coating — the membrane cannot bridge active structural movement. We fill all cracks above this threshold as standard prep scope.
Schedule a Walkthrough
We assess substrate type, crack width, and moisture condition before writing a number.
Our Process: Done Right the First Time
- 1On-Site Estimate & Surface AssessmentWe walk the full exterior, assess surface condition, identify cracked caulk, soft wood, mildew, and failing paint. You get a written, line-item estimate before we start — prep scope included, not added later.
- 2Full Prep: Wash, Scrape, Caulk & PrimePressure wash to remove chalk, dirt, and loose paint. Scrape all failing paint to bare surface. Caulk every joint, seam, and window surround. Spot-prime bare areas and repairs. Landscaping and hardscaping protected throughout.
- 32-Coat Finish & Final WalkthroughTwo coats of surface-matched exterior coating applied in appropriate weather conditions. We do not paint in direct Houston midday sun or when rain is forecast within 24 hours. Final walkthrough before we leave — no drips on concrete, no paint on windows.
What to Expect: Your Project Timeline
| Stage | When | What Happens |
|---|---|---|
| Estimate & booking | Within 24–48 hours | On-site surface assessment, written quote, color and product selection |
| Pressure wash | Day 1 | Full house wash; mildew treatment where needed; 24–48 hr dry time before paint |
| Scrape, caulk & prime | Day 2 | Scrape failing paint; caulk joints; spot-prime repairs and bare surfaces |
| First coat | Day 2–3 | First exterior finish coat in suitable conditions; not applied in direct midday sun |
| Second coat & walkthrough | Day 3–5 | Second coat; final inspection; concrete and landscaping clean before departure |
These are estimates. Wet weather or heavy prep can extend the timeline.
The Right Time to Schedule Elastomeric Coating Systems
Your stucco has recurring hairline cracks through the paint.
Hairline cracking on stucco is thermal movement — it will return through rigid paint annually. An elastomeric system bridges the movement and does not re-crack.
You have a masonry home with water intrusion through the walls.
An elastomeric membrane on correctly prepared masonry stops lateral water intrusion. We confirm the moisture source before applying — the membrane must not trap active moisture.
A previous standard acrylic failed quickly on masonry.
Standard acrylic is not designed for masonry movement or waterproofing. The correct product for masonry with cracking or moisture issues is elastomeric.
Best Time to Book
October through April is optimal for elastomeric application in Houston — lower humidity allows correct film build and cure.
The Henry Contractor Difference
Weather-smart scheduling
We do not paint in direct Houston midday sun, when rain is forecast within 24 hours, or when humidity exceeds coating manufacturer specs. Paint applied in the wrong conditions fails early — we schedule around the Gulf Coast weather, not around the calendar.
Full prep, no shortcuts
Pressure wash, scrape, caulk, and prime are standard on every exterior job. Skipped prep is the reason most exterior paint jobs fail in 3–4 years instead of 7–10. We do not skip steps to hit a low bid.
No hidden fees
Your written estimate includes the prep scope. If additional rot, caulk failure, or surface damage is found during prep, we document it and get your approval before expanding. Nothing changes without your sign-off.
Transparent Pricing for Elastomeric Coating Systems
| What Drives the Cost | Standard vs. Premium | Hidden Costs to Watch For |
|---|---|---|
| Square footage and number of stories; a single-story 1,800 sq ft home is a different scope than a two-story 3,500 sq ft home with multiple roof lines | Standard: 100% acrylic exterior latex, 2 coats. Premium: Sherwin-Williams Duration or Emerald Exterior for better UV resistance and longer repaint cycle | Wood rot found during prep — boards need replacement before painting; quoted and approved before crew starts |
| Surface condition; paint in good condition needing refresh vs. failing paint requiring full scrape and reprime | Standard: pressure wash, caulk, spot-prime, 2 coats. Premium: full scrape to bare surface, bonding primer, elastomeric or high-build topcoat | Lead paint testing for pre-1978 homes before any sanding or scraping begins |
| Access difficulty; single-story ground-level work vs. multi-story with ladder or scaffold requirements | Standard: one field color + trim color. Premium: multi-color scheme with accent body, trim, shutters, and door coordinated per designer or HOA spec | Failed caulk on all window and door surrounds adds material and labor time to prep |
Elastomeric systems: $3,500–$35,000 depending on surface area and substrate. Written quote fixed before work starts.
Get an Exact Number
We assess substrate suitability and crack condition before recommending elastomeric vs. standard coating.
Elastomeric Coating Systems vs. DIY vs. Cheap Labor
| Feature | Henry Contractor | DIY | Cheap Labor |
|---|---|---|---|
| Prep Work | Pressure wash, scrape, caulk, prime — every job, every surface | Wash and prime if motivated; scrape often skipped on hard-to-reach areas | Minimal prep to hit a low bid; failing paint painted over |
| Weather Scheduling | Scheduled around Houston heat, humidity, and rain forecast; no midday direct sun application | Painted on available days; weather conditions not assessed | Painted whenever crew is available; weather failures common |
| Product Selection | Surface-matched exterior coating; 100% acrylic or elastomeric by substrate | Mid-range acrylic; not always substrate-specific | Cheapest available exterior flat; wrong product for surface type common |
| Caulking | All joints, seams, and window surrounds caulked before paint | Caulked on request; gaps and failed caulk common after first rain | Not included; water intrusion through failed joints |
| Pricing Transparency | Written prep-inclusive quote; no mid-job add-ons | Estimate grows with prep scope clarification | Low headline; prep, caulk, and second coat add-ons mid-job |
Who We Partner With
Stucco and Masonry Homeowners
Houston stucco and masonry homes in flood-adjacent areas and with south-facing thermal exposure benefit most from elastomeric systems over standard acrylic.
Commercial Property Owners
Masonry block commercial exteriors benefit from the 10 to 15 year cycle and waterproofing rating of elastomeric systems over standard exterior paint.
Property Managers
Multi-unit masonry properties with recurring paint failure on stucco or block are candidates for elastomeric system upgrades. Longer cycle reduces repaint frequency.
Proudly Serving Greater Houston
We proudly provide professional painting services to homeowners and businesses throughout the Greater Houston area, including: The Woodlands, Katy, Sugar Land, Pearland, Cypress, Memorial, and surrounding neighborhoods.
See our stucco repaint service or return to the exterior painting hub.
Frequently Asked Questions
The short answer is an estimated $3,500 to $35,000 depending on surface area, substrate type, and number of coats required. Stucco single-story homes at the lower end; large masonry commercial exteriors at the upper end. The higher cost compared to standard exterior paint is offset by the 10 to 15 year expected cycle.
Elastomeric coating is a high-build, flexible membrane applied at 10 to 20 mil wet-film thickness — 5 to 10 times thicker than standard exterior paint. It bridges hairline cracks up to 1/16 inch, provides rated waterproofing, and accommodates thermal movement without cracking. Standard exterior paint forms a rigid, thin film and does not bridge cracks.
Elastomeric coatings are appropriate for masonry, stucco, concrete block, brick, EIFS, and smooth fiber cement. They are not appropriate for wood lap siding with open joints, or substrates where moisture is actively moving through the wall. Substrate suitability is confirmed during the on-site assessment.
The short answer is 10 to 15 years when applied at the correct mil thickness over a properly primed substrate in Houston conditions. Standard exterior paint on the same surface lasts 6 to 8 years. The longer cycle typically justifies the higher upfront cost for masonry and stucco homes.
No — elastomeric coating bridges existing and future hairline cracks up to 1/16 inch, but it does not prevent the stucco from moving. Thermal expansion and contraction continue — the elastomeric membrane stretches with the movement rather than cracking through it. Structural cracks wider than 1/16 inch must be filled before the coating is applied.
Ready to upgrade your property?
Fill out the free estimate form at the top of the page to get started, or call us directly to schedule your on-site walkthrough.