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Dryseal GRP Flat Roofing System - Roof Waterproofing System

Verified by manufacturer 1 month ago

Hambleside Danelaw Ltd Third party certifications:
  • BBA Agrément Certificate

    BBA Agrément Certificate

    Certificate type

  • Warrington Fire

    Certificate type

  • Secured By Design

    Secured By Design

    Certificate type

Dryseal is a roof waterproofing system comprising of pre-cured mechanically fixed GRP membrane and profiled trim components, suitable for low pitched and ‘flat’ roofing.

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Application

  • Suitable for low pitched and ‘flat’ roofing.
  • Used on cold or warm roof configurations.
  • Installed in new-build applications or over an existing roof covering subject to the deck being in good condition.
  • Laid directly onto the insulation in a warm roof situation and additional insulation layers in refurbishment work. 
  • Suitable for green roof applications.

Description

The Dryseal GRP Roofing System for flat an low pitched roofs is approved installer only and consists of a prefabricated glass fibre reinforced polyester (GRP) resin flat sheet and preformed trims, mechanically fixed and jointed on site by the hand lay-up process and coated with a UV protective liquid-applied polyester top coat.


It requires much less site applied ‘wet’ working, compared to other available systems, in turn improving the speed and security of installation, restricting the effects of inclement weather during installation, and helping to complete an effective single ply membrane roof covering.


Features and benefits:

  • Fully mechanically fixed, jointed using resin and fibreglass reinforcement then finished with a UV protective top coat.
  • Colour choice of UV resistant service finish.
  • Robust and non-toxic.
  • Based on standard components that provide a system guaranteed to remain leak-free for 20 years. 
  • Leak-free Materials Guarantee is supplemented by the Approved Installer’s Guarantee and further covered by an insurance backed warranty.
  • Manufactured in accordance with ISO 9001 Quality and ISO 14001 Environmental standards.
  • Additionally approved by the British Board of Agrément (BBA).

General information

Color

Grey

Finish

Smooth

Anti-slip

Manufacturer guidance

UV-protective topcoat

Material

Glass Reinforced Plastic (GRP)

Shape

Other

Length

6000 mm

Width

1250 mm

Height

1.3 mm

Manufacturer guidance

Thickness of the membrane and trims

Warranty description

20 year

Guidance for specification option:

The product guarantee for longevity and 'leak free' properties from Hambleside Danelaw Ltd is for 20 years.

The installers' guarantee is concurrent with the manufacturers's guarantee and is valid for the first 10 years.

There is a 5 year insured guarantee which covers the installation in the event of contractor or manufacturer's insolvency.

Uniclass

Ss_30_40_30_43 Liquid-applied warm roof covering systemsPrimary
Ss_30_40_30_40 Liquid-applied cold roof covering systems

CAWS

J31/10 Warm deck roof coating

J31/120 Warm deck roof coating

J31/110 Cold deck roof coating

J31/5 Cold deck roof coating

Specification data - Liquid-applied warm roof covering systems

System performance

Waterproofing.

Preparation

-

Horizontal work

-

Manufacturer guidance

Vapour control layer recommendations as per manufacturer literature. Insert requirements.

Skirtings and vertical work

-

Manufacturer guidance

Insert requirements or omit.

Air and vapour control layer

Not required.

Required.

Guidance for specification option:

  • Loose lay vapour control layer to BS EN 13984 or BS EN 13970 and to comply with BS 5250 humidity classification.
  • Required per Building Regulation and recommendations of BS 6229.
  • Consult Hambleside Danelaw for recommended Dryseal vapour control layers.

Insulation

-

Type

Not required.

Guidance for specification option:

Not applicable for cold roof systems.

Required.

Guidance for specification option:

  • For warm roof systems - supply and loose lay Kingspan TR26 or equivalent rigid PIR insulation boards to BS 4841 and of sufficient thickness.
  • Recommendation of compressive strength of 180 Kpa/ 10% (maximum).
  • Consult manufacturer for details and insert requirements.

Fixing

-

Manufacturer guidance

Fixing recommendations as per Hambleside Danelaw technical advice. Insert requirements.

Overlay

-

Type

-

Manufacturer guidance

Insert requirements or omit.

Fixing

-

Manufacturer guidance

Fixing recommendations as per Hambleside Danelaw technical advice. Insert requirements.

Carrier membrane

-

Type

H 1250 F heavy duty flat sheet.

H 1250 RibTec sheet.

Manufacturer guidance

Dryseal membrane sheets:

Thickness: 1.3 mm (nominal).

Length: 6.0 m.

Width: 1.25 m.

Fixing

Fixing plates (40 mm diameter glass filled polyamide).

Liquid-applied waterproofing

-

Type

Polyester resin waterproof coatings.

Reinforcement

Glass fibre reinforcement.

Surface treatment

UV protective liquid-applied polyester top coat, Dryseal Dark Grey.

UV protective liquid-applied polyester top coat, Dryseal Light Grey.

UV protective liquid-applied polyester top coat, RAL or BS colour.

Guidance for specification option:

Matched to any BS and RAL colour. Insert requirements.

System accessories

Dryseal trims.

Guidance for specification option:

Thickness: 1.2 mm.

Length: 3.0 m.

Weight

<3 kg/m².

Thermal conductivity (maximum)

0.2 W/mK.

Thermal transmittance (U-Value)

5.7 W/m²K.

Linear thermal expansion coefficient

22 x 10-6m/m per °C.

Water absorption

<3% (24 hrs at 20°C).

Water vapour resistance

475 MNs/g (75% RH, 25°C).

Tensile strength

112 kN/m.

Sustainability data

Contains Red List materials

No

Country of product manufacture

United Kingdom

Material

Glass Reinforced Plastic (GRP)

Manufacturing plant location

Recycled content

As defined in clause 7.8 of BS EN ISO 14021

0 %

Expected Life

30 year

Third party certifications

BBA Agrément Certificate

BBA Agrément Certificate

BBA Certificate

Warrington Fire

Warrington Fire

Warrington Fire Test

Secured By Design

Secured By Design

Secured by Design Certificate Dryseal 2024

Literature

Dryseal Sales Brochure - Interactive

Dryseal Sales Brochure - Interactive

Warm Roof - Generic Dryseal Specification

Warm Roof - Generic Dryseal Specification

Dryseal Roofing System Cold Roof Specification

Dryseal Roofing System Cold Roof Specification

Dryseal Product Data Sheet

Dryseal Product Data Sheet

Dryseal Drawings

Dryseal Drawings

Dryseal Guarantee Specimen

Dryseal Guarantee Specimen

Dryseal inspection and maintenance recommendations post installation

Dryseal inspection and maintenance recommendations post installation

Dryseal roof edge trim detail drawings

Dryseal roof edge trim detail drawings

Case studies

Green roof in Boothby Graffoe, Lincs.

Green roof in Boothby Graffoe, Lincs.

New House in Ballinagare, Co Roscommon

New House in Ballinagare, Co Roscommon

Zinc lookalike roof.

Zinc lookalike roof.