TECHNICAL ANSWER
What is the colour (liquid) for Liquid Rubber HBS200?
Brown to black. Cures to black seamless membrane.
LIQUID RUBBER HBS200 · HIGH-BUILD WATERPROOFING
Build a seamless waterproof layer over the repair area.
HBS200 is the high-build liquid waterproofing route for compatible gutters, seams, joints and local roof details. It is a cold-applied, water-based, solvent-free coating that cures to a flexible black membrane — a different job from ProFix's fast temporary local leak repair.
Type
Modified elastomeric bituminous emulsion
Application
Brush / roller / squeegee / spray
Coverage
1.35 kg/m² (1 mm) · 2.7 kg/m² (2 mm)
Elongation
850% (ASTM D638)
QUICK ANSWER 1
How much HBS200 do I need per m²?
Per the Liquid Rubber TDS: 1.35 kg/m² produces approximately 1 mm cured membrane (airtight); 2.7 kg/m² produces approximately 2 mm (waterproof).
QUICK ANSWER 2
Can HBS200 repair a leaking commercial gutter?
It can be suitable for gutter, seam and joint waterproofing where the substrate and defect are compatible and correctly prepared on a dry surface.
QUICK ANSWER 3
Can HBS200 go onto a wet surface?
No. The Liquid Rubber TDS states HBS200 should be applied to a dry surface. Do not apply to wet surfaces or directly before rain.
QUICK ANSWER 4
Is HBS200 solvent based?
No. The Liquid Rubber TDS confirms it is water-based, contains no solvents and no VOC.
PROBLEM → SOLUTION
Problems HBS200 is designed to address
Start with the defect, not the product name. That is the safest way to understand whether this system belongs on the job.
Leaking commercial gutter
Suitable where the gutter substrate and defect can be prepared and a seamless high-build waterproofing layer is appropriate.
Failed seams and joints
Can form part of a reinforced local waterproofing build-up where joints and cracks require treatment before the main membrane coats.
Local roof waterproofing
Useful for compatible roof details that need a cold-applied seamless flexible membrane rather than a decorative cladding finish.
Concrete or ferrous protection
Manufacturer data supports protective coating use on compatible concrete and ferrous materials, subject to preparation and specification.
Standing water / wet application
Do not assume suitability. Manufacturer application guidance calls for a dry, clean surface; HBS200 is not the underwater-repair product.
Structural failure
Not the answer. Failed decking, unstable metal, through-corrosion or structural movement must be addressed before coating.
ANSWER IN 30 SECONDS
What is Liquid Rubber HBS200?
HBS200 is a modified elastomeric bituminous emulsion — a water-based, solvent-free, single-component high-build waterproofing and air-barrier coating by Liquid Rubber. Cold-applied and quick-setting, it cures from a brown/black liquid to a seamless black flexible membrane with excellent strength, elasticity and adhesion. Used as a protective coating to prevent water and corrosion damage, as an air barrier, and for rust protection of ferrous materials. The high viscosity allows it to cover small cracks and coat vertical surfaces. CE marked according to EN 1504.
BEST FIT
commercial gutters, roof details, seams, joints, compatible concrete and ferrous material protection, and local waterproofing where a cold-applied seamless membrane is appropriate.
WHERE IT FITS IN THE JOB
1
Diagnose the leak
Confirm whether ingress is through the coating or detail, or caused by drainage, structural movement or a failed substrate.
2
Prepare the surface
Apply to a dry surface free from dirt, debris, oil and grease. At joints or cracks, a fabric reinforcing layer may be recommended. Do not apply if heavy rain is imminent.
3
Build the membrane
Apply in thin coats — 1.35 kg/m² for 1 mm (airtight) or 2.7 kg/m² for 2 mm (waterproof). Dries to touch in approx. 1 hour; fully cured in 24 hours. Degrease between coats during curing.
Suitable uses & substrates
Commercial gutters, seams and joints
Compatible roof waterproofing details
Concrete structures, slabs and parking decks
Ferrous materials for rust protection
Vertical surfaces and small crack bridging
Indoor or outdoor protective coating applications
Noise and vibration dampening applications
Do not use the product to hide the wrong problem
Do not apply when outside or surface temperature is below 5°C — uncured membrane may be damaged if frozen.
Do not apply to wet surfaces or directly before rain. Do not apply if rain is imminent within 24 hours.
Coal tar-based surface coat materials are unsuitable for use with HBS200.
Structural cracks, failed decking and unstable substrates need repair before coating.
Do not store in direct sunlight; max storage 32°C or below 5°C.
TECHNICAL QUESTIONS & ANSWERS
Technical facts, answered in plain English.
Useful product data should answer a question, not sit in a wall of specification cards. These answers use the current technical information for Liquid Rubber HBS200.
TECHNICAL ANSWER
What is the usage — 1 mm membrane for Liquid Rubber HBS200?
1.35 kg/m². Airtight seal.
TECHNICAL ANSWER
What is the usage — 2 mm membrane for Liquid Rubber HBS200?
2.7 kg/m². Waterproof membrane.
TECHNICAL ANSWER
What is the solids % for Liquid Rubber HBS200?
53–58%. Liquid product.
TECHNICAL ANSWER
What is the elongation for Liquid Rubber HBS200?
850%. ASTM D638 typical result.
TECHNICAL ANSWER
What is the recovery for Liquid Rubber HBS200?
>90%. ASTM D638.
TECHNICAL ANSWER
What is the salt resistance for Liquid Rubber HBS200?
Passed >1,200 hours. ASTM B117-09.
TECHNICAL ANSWER
What is the uv resistance for Liquid Rubber HBS200?
Passed >250 hours. ASTM G-155.
TECHNICAL ANSWER
What is the air permeability for Liquid Rubber HBS200?
0.0004 L/(s·m²) at 75 Pa. ASTM E2178.
TECHNICAL ANSWER
What is the crack bridging for Liquid Rubber HBS200?
Passed. ASTM C1305.
TECHNICAL ANSWER
What is the voc for Liquid Rubber HBS200?
None. Water-based, solvent-free.
TECHNICAL ANSWER
What is the adhesion to concrete for Liquid Rubber HBS200?
3.7 n/mm². Cured membrane.
TECHNICAL ANSWER
What is the adhesion to aluminium for Liquid Rubber HBS200?
2.7 n/mm². Cured membrane.
TECHNICAL ANSWER
What is the dry to touch for Liquid Rubber HBS200?
Approx. 1 hour. Temperature and humidity dependent.
TECHNICAL ANSWER
What is the fully cured for Liquid Rubber HBS200?
24 hours. Temperature and humidity dependent.
TECHNICAL ANSWER
What is the standard for Liquid Rubber HBS200?
CE — EN 1504. CPR EU 305/2011.
REAL APPLICATIONS
See the sort of details this product is used on.
STRAIGHT ANSWERS
The questions people actually ask about Liquid Rubber HBS200.
How much HBS200 do I need per m²?
Per the Liquid Rubber TDS: 1.35 kg/m² produces approximately 1 mm cured membrane (airtight); 2.7 kg/m² produces approximately 2 mm (waterproof).
Can HBS200 repair a leaking commercial gutter?
It can be suitable for gutter, seam and joint waterproofing where the substrate and defect are compatible and correctly prepared on a dry surface.
Can HBS200 go onto a wet surface?
No. The Liquid Rubber TDS states HBS200 should be applied to a dry surface. Do not apply to wet surfaces or directly before rain.
Is HBS200 solvent based?
No. The Liquid Rubber TDS confirms it is water-based, contains no solvents and no VOC.
What standard is HBS200 certified to?
HBS200 carries a Declaration of Performance under the Construction Products Regulation (CPR) EU 305/2011 according to EN 1504.
PROBLEM-LED ANSWERS
What problem are you actually trying to solve?
The technical facts are already above. These answers start with the leak, defect or site condition so it is clear when Liquid Rubber HBS200 belongs in the solution — and when it does not.
My commercial gutter leaks along several seams — can HBS200 be used instead of replacing the whole gutter?
It can be suitable where the gutter remains structurally sound and the leaks come from compatible seams, joints or surface waterproofing defects. The substrate must be dry and correctly prepared; badly perforated metal, failed falls or structural movement are not solved by simply coating over them.
The gutter is still wet after rain — can I apply HBS200 straight away?
No. The Liquid Rubber TDS states HBS200 should be applied to a dry surface and should not be applied directly before rain. If the repair must be made while the detail is only lightly moist, a different product route such as ProFix may be more appropriate for a temporary local repair.
I have cracks and movement at a gutter joint — will HBS200 alone bridge everything?
Do not assume so. At joints or cracks a reinforcing fabric may be recommended as part of the build-up. First identify whether the defect is a surface crack, a moving joint, a failed connection or structural damage, then follow the project specification.
Water is getting through a concrete upstand or local roof detail — is HBS200 only for metal gutters?
No. The TDS supports HBS200 as a high-build waterproofing coating on compatible substrates including concrete, and reports adhesion data for concrete. Suitability still depends on the actual defect, dryness, stability and preparation of the surface.
The steel is rusty under the leaking area — can HBS200 just be painted over the rust?
HBS200 is used for protection of ferrous materials, but it is not a licence to coat loose corrosion or structurally weakened steel. Remove defective material and establish whether the steel remains sound before applying the waterproofing build-up.
The leak keeps returning after small patch repairs — should I keep adding HBS200?
No. Repeated failure is a sign to diagnose the wider cause. Check gutter falls, outlets, movement, perforation, failed joints and substrate condition. HBS200 is useful when the problem is one the membrane can actually solve; it should not mask a drainage or structural defect.
I need a waterproof 2 mm membrane — how much HBS200 should I allow?
Per the current Liquid Rubber TDS, approximately 2.7 kg/m² is used for a 2 mm waterproof membrane. That is the technical consumption figure; real project quantities should also account for detailing, surface profile and wastage.
RELATED QUESTIONS & TOPICS
Problems and applications connected to this system
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