NewSeal 420 DeckDrain - Superior Water-Retention Membrane for Roofs Waterproofing Type C, Deck Drainage System,

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NewSeal 420 DeckDrain

Name: NewSeal 420 DeckDrain
Brand: Newton Waterproofing
SKU: m31
Price: 614.08 GBP
Availability: InStock
Rating: 5 (2 reviews)

Save £131.71

Newton WaterproofingSKU: M31

Size: 46m2

Color: Black

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£614.08 £745.79

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NewSeal 420 DeckDrain – Advanced Drainage & Water-Retention Membrane for Green Roofs

NewSeal 420 DeckDrain is a high-performance drainage and water-retention membrane, designed for extensive green roofs featuring sedum, moss, herbaceous plants, or grass. Its unique bonded geotextile ensures maximum water retention while preventing soil intrusion into the water-holding cups, providing a larger and more effective water reservoir than other 20mm-deep membranes.

When the reservoir is full, the large drainage holes allow excess water to flow freely, preventing saturation and waterlogging.

Key Benefits:

✔ Superior Water Retention – Maintains a larger water reservoir than conventional membranes.
✔ Prevents Geotextile Sagging – Unique bonded geotextile prevents soil intrusion into water-holding cups.
✔ Fast Drainage Flow – Large drainage holes prevent waterlogging and allow for efficient runoff.
✔ Highly Durable & Resilient – Tough HDPE core withstands heavy loads.
✔ Enhanced Soil Filtration – Geotextile layer filters out suspended soil particles (fines).
✔ Easy & Quick Installation – Lightweight, flexible, and designed for efficient laying.

Typical Applications:

✔ Extensive Green Roofs – Ideal for shallow planting above decks, flat roofs, or pitched roofs.
✔ Drainage & Water Management – Ensures controlled water retention while allowing excess flow.
✔ Sustainable Building Solutions – Supports eco-friendly roofing systems.

Suitable Substrate:

✔ Directly above the primary deck or roof waterproofing membrane.

Product Data:

Code	Packaging	Colour	Area
M31	Roll: 50m x 0.92m	Black	46m²

Technical Performance:

Feature	Result
Water Flow at 20 kPa (1:80 slope)	0.07 l/m/s
Water Flow at 100 kPa (1:80 slope)	0.04 l/m/s
Water Flow at 200 kPa (1:80 slope)	0.02 l/m/s
Temporary Load Compressive Strength	>240 kPa
Permanent Load Compressive Strength	>120 kPa
Water Vapour Diffusion Resistance – Sd Value	>604m
CBR Puncture Resistance	2800.00 N
Tensile Strength (Machine Direction)	19 kN/m²
Tensile Strength (Cross Direction)	10 kN/m²
Chemical & Oxidation Resistance	Excellent

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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

Verified customer

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

Verified customer

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

Verified customer

Great Technical Support

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

Shirley

Verified customer

Highly Recommended

Sandra Dow

Verified customer

NewSeal 420 DeckDrain

Description

NewSeal 420 DeckDrain – Advanced Drainage & Water-Retention Membrane for Green Roofs

Key Benefits:

Typical Applications:

Suitable Substrate:

Product Data:

Technical Performance:

Payment & Security

NewSeal 420 DeckDrain

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