Dampsafe 809-HP DPC Damp Proof Waterproofing Type C, Damp Proof Membrane, Damp Proofing, Damp Proofing Membranes &

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Newton Dampsafe 809-HP DPC

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Newton WaterproofingSKU: 809-150

Size: 150mm x 20m

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£15.51 £19.99

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Newton DampSafe 809-HP High-Performance Damp-Proof Course (DPC)

The Newton DampSafe 809-HP DPC is a high-performance polymeric damp-proof course that provides an extremely tough, radon-rated barrier against moisture ingress. Designed to withstand high compressive loads without extrusion, this durable DPC is suitable for horizontal, vertical, and stepped applications, including cavity trays and solid masonry walls.

Key Benefits

✔ Highly durable & tough – Will not deform or extrude under compressive loads.
✔ Superior moisture protection – Effective barrier against water & water vapour.
✔ Flexible & resistant to shrinkage – Performs in low temperatures without cracking.
✔ Strong adhesion – Bond strength is greater than the bond between mortar and brick.
✔ Versatile use – Compatible with Newton waterproofing & damp-proofing systems.

Typical Applications

🔹 Horizontal, vertical, and stepped damp-proof courses
🔹 Cavity trays in cavity and solid masonry walls
🔹 Integration with Newtonite Damp Proofing & CDM Waterproofing Systems
🔹 Extension of floor membranes through internal and spine walls

Suitable Substrates

✅ Brick & Block
✅ Stone
✅ Concrete
✅ High-load insulated wall courses (e.g., Marmox Thermoblock, Foamglas Perinsul)

Product Data

Code	Width (mm)	Roll Length	Coverage
809-100	100mm	20m	2m²
809-150	150mm	20m	3m²
809-115	115mm	20m	2.3m²
809-300	300mm	20m	6m²
809-337.5	337.5mm	20m	6.75m²
809-450	450mm	20m	9m²
809-600	600mm	20m	12m²
809-900	900mm	20m	18m²

Downloads

Download DampSafe 809-HP DPC Data Sheet

Download DampSafe 809-HP DPC Safety Data Sheet

Download DampSafe 809-HP DPC Declaration of Performance

Technical Data

Installed Performance	Result
Resistance to static load (10 mm steel ball)	20kg
Shear resistance of joints – longitudinal	100 N/mm2
Shear resistance of joints – traverse	250 N/mm2
Durability (Alkali, Annex C – 50% elongation)	Pass
Elongation at break – longitudinal	810%
Elongation at break – traverse	850%
Resistance to tearing (nail shank) – longitudinal	170N
Resistance to tearing (nail shank) – traverse	180N
Flexibility at low temperatures	≤40oC
Durability against heat ageing – 60 kPa	Pass
Radon permeability	18 x 10(-12) m/s
Radon transmittance	21 x 10(-12) m/s
CO2 permeability	1.59 x 10(-12) m2/s/Pa
Water vapour diffusion resistance – Sd value	350m
Reaction to fire (Euroclass)	E

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What Our Customers Say

Very good 4.7/5

Exceptional Advice & Support

Hands down in all of my reviews I've done in 21+ years, Clever Shield Coatings is one I'll always remember as the staff are friendly & passionate about their job - looking out for the customer and getting the job done right first time.

Sunny

Verified customer

Fast, friendly and reliable…

Fast, friendly and reliable. I was able to get my job done quickly and my customer was happy with the prices.

Thanks.

Kamil

Verified customer

Exceptional Advice & Support

We have been using clever shield (dealing with Richard) for over 2 years. They always give good service deliveries on time and even give technical advise when needed.

JAC

Verified customer

Really helpful! great service

Spoke to technical for some advice on the product and it was really helpful, great service

Tina Mansfield

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Great company / knowledgeable

What a great company - knowledge about the products, spent lots of time talking me through everything - if only every company was like this one !

Ostler Info

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Great company and speedy delivery

Really great company to deal with,excellent customer service,speedy delivery will definitely recommend and use again as a satisfied customer

Del Upson

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Great Technical Support

Great technical support and advice on wykamol products would highly recommend this company

Shirley

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Highly Recommended

Sandra Dow

Verified customer

Newton Dampsafe 809-HP DPC

Description

Newton DampSafe 809-HP High-Performance Damp-Proof Course (DPC)

Key Benefits

Typical Applications

Suitable Substrates

Product Data

Downloads

Technical Data

Payment & Security

Newton Dampsafe 809-HP DPC

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