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  • Product Range
    • Bay Window Roofs
      • GRP Curved Bay Window Roofs
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    • Columns / Posts & Portico’s
      • Columns and Portico’s
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    • COPEKING®
      • COPEKING® – Single Weathered
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    • Dormers
      • Full GRP Dormer with Apex Roof
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      • WARMADORMA© Full GRP dormer roof
    • Entrance Door Canopy Range
      • GRP Apex Entrance Door Canopy
      • Clearlight Contemporary Entrance Door Canopies
      • GRP Curved Entrance Door Canopies
      • GRP Flat Entrance Door Canopies
      • GRP Lean-To Entrance Door Canopies
      • GRP Pitched Entrance Door Canopies
    • Roof Accessories – Roof Towers and Finials
      • GRP Roof Towers
      • GRP Finials
    • SmartStack Chimneys
      • SmartStack Full GRP Brick Effect Chimney
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      • GRP Render Onsite Chimney
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      • GRP Substation Doors
      • Substation Roofs
    • Window Surrounds – GRP Complete Face Fixed
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    • Download our Brochure
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Home
  • Product Range
    • Bay Window Roofs
      • GRP Curved Bay Window Roofs
      • GRP Flat Bay Window Roof
      • GRP Lean To Bay Window Roof
      • GRP Oriel Bay Window Roof
      • GRP Pitched Bay Window Roof
    • Columns / Posts & Portico’s
      • Columns and Portico’s
      • GRP Kneelers & GRP Brackets
    • COPEKING®
      • COPEKING® – Single Weathered
      • COPEKING® – Double Weathered
    • Dormers
      • Full GRP Dormer with Apex Roof
      • Full GRP Dormer with Catslide Roof
      • Full GRP Dormer with Flat Roof
      • Full GRP Dormer with Hipped Dormer
      • WARMADORMA© Full GRP dormer roof
    • Entrance Door Canopy Range
      • GRP Apex Entrance Door Canopy
      • Clearlight Contemporary Entrance Door Canopies
      • GRP Curved Entrance Door Canopies
      • GRP Flat Entrance Door Canopies
      • GRP Lean-To Entrance Door Canopies
      • GRP Pitched Entrance Door Canopies
    • Roof Accessories – Roof Towers and Finials
      • GRP Roof Towers
      • GRP Finials
    • SmartStack Chimneys
      • SmartStack Full GRP Brick Effect Chimney
      • GRP Render Effect Chimney
      • GRP Render Onsite Chimney
    • Substation Product Range
      • GRP Substation Doors
      • Substation Roofs
    • Window Surrounds – GRP Complete Face Fixed
    • Custom GRP Fabrications
    • Download our Brochure
  • Why Stormking?
    • Certification and Accreditations
    • Environmental Product Declarations
    • Careers
    • Case Studies
    • FAQs
    • Sustainable Construction
    • Our History
    • Meet the Team
  • Our Thinking
  • Tech Hub
    • Technical Drawings
    • Installation Guides
    • Download Brochure Here
    • Sustainability Overview
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us
Technical drawings
Download Brochure
  • Wide product range
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  • Onsite support team
GRP Dormer with
Catslide Roof
Stormking’s market leading GRP Dormer units are a complete solution that
cuts costs without compromising quality.

GRP Catslide Roof Dormers

Stormking’s leading range of GRP Dormer with Catslide Roof offers an alternative to traditional building materials with a product that is lightweight, quick to install and virtually maintenance free.

All Stormking GRP Dormers with Catslide Roofs are BBA accredited (certificate no. 17/5434) and are factory finished, complete with full internal timber frame, insulation and delivered to site shrink wrapped ready for installation.

Full GRP Dormers - GRP Dormer with Catslide Roof Range

Stormking’s Catslide Roof Dormer range has been engineered with the customer in mind, and are available in a range of roof pitches, styles and window sizes to suit your roof type and complement your development’s features. Choose from Flat Roof Lead Effect or Trussed (ready to tile) options.

Performance Features

  • BBA certified and independently assessed to UKAS standards.
  • Modern GRP technology for perfect recreation of natural materials..
  • Dry fit, requiring no specialist trades for installation.
  • Greater design flexibility that is repeatable in volume.
  • No need for independent scaffolding.
  • Ideal high strength to weight requirements.
  • Evenly balanced and lightweight to aid installation.​
get a free quote

GRP Catslide Roof Dormer Range Colour Options

All Stormking products are made to manufacture and selecting the colour of your product is no exception, with a range of fascia colours to select from. All Flat Lead Effect roof types come in ‘Slate Grey’. Fascia can be provided in either White, Ivory, or any colour from the RAL palette**.

GRP Catslide Dormer Roof Range Fascia Colour Options

Cream
White
Ivory/Cream
Slate/Lead Grey
Anthracite Grey
Black

Cream
White
Ivory/Cream
Slate/Lead Grey
Anthracite Grey
Black

GRP Catslide Dormer with Flat Roof Colour Options

Slate Grey

**Terms & conditions apply. Please note all colours are for reference only and may look different on the finished product.

Full GRP Dormer with Catslide Roof Drawing Downloads

Here is a small sample of Stormking’s Full GRP Dormer with Catslide Roof drawings.

Stormking - Catslide Dormer Lead Effect Roof
View
Stormking - Catslide Dormer Lead Effect Roof
View
Stormking - Catslide Dormer Lead Effect Roof
View
Download our GRP Dormer installation guide

Visit Our Tech Hub

Stormking’s Technical Hub contains drawing files and technical data for the Stormking range of products.

All Stormking products have been designed and engineered by our in-house team of technical experts, drawing from over three decades of experience in supplying the building sector.

visit the tech hub

Frequently Asked Questions

What makes the Stormking Dormer range different?

Stormking are the only manufacturer who have obtained BBA Certification, this is the only independent accreditation recognised by Building Control to satisfy current Building Regulations.

What ‘U’ values are the Stormking dormer roofs?

We only use a sprayed foam insulation which provides a range of ‘U’ values, we can design the internal structure to suit the value that you require. Choosing our WARMADORMA© design will provide ‘U’ values and Psi values for the highest Code levels.

How easy are Stormking Dormer units to offload & install?

Every Stormking Dormer includes sacrificial lifting beams, by using a telly hoist or forklift the roofs can be transported and installed easily on site.

What makes Stormking WARMADORMA© different from our standard dormer ranges?

Stormkings WARMADORMA© range of dormers have been manufactured to be increasingly thermally efficent. This is supported through our BBA Accreditation, available to view/download in the Tech Hub area.

Download Stormking's Dormer Brochure

Learn how your next building development will benefit from using Stormking’s Dormer Products, by downloading our GRP Dormer Brochure. 

Download Our Brochure

Benefit from Building Off-Site

Manufactured off-site, saving you time onsite.


Installation Made Safer

No need for extra scaffolding.




Installation Made Simple

Helping to reduce the number of specialist skills needed onsite.


Discuss your next development with us

Get a free quote

Speak to the Team

We are here to help, call us on 01827 311100 or complete the form below and we will contact you.
Home
  • sales@stormking.co.uk
  • 01827 311 100

Amington Point, Sandy Way,
Amington Industrial Estate
Tamworth, Staffordshire
B77 4ED

*Free nationwide delivery, excludes highlands and islands. Minimum spend required, does not include specialist delivery vehicles. 

**Terms and Conditions apply.

Stormking is part of the Epwin Group of companies.

VAT Registration No. 864 4507 10

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April 30, 2025

Then and Now – 40 Years of Progress, Built With You

Stormking is a trading name of Specialist Building Products Limited, a wholly owned subsidiary of the Epwin Group Plc. Specialist Building Products Limited is registered in England & Wales. Company Registration No. 01268689.

Registered Office: Friars Gate, 1011 Stratford Road, Shirley, Solihull, West Midlands, B90 4BN

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