About Flat Roof Installation & Replacement

Whether you're adding a new extension, replacing a tired old felt roof, or fitting a roof to a new garage or outbuilding, we'll recommend the right flat roofing system for the job - GRP, EPDM or felt - based on your budget, the size of the roof and how it will be used.

  • Free, no-obligation site visit and quotation
  • Advice on the right system for your roof and budget
  • Correct falls built in to avoid ponding water
  • Insulation upgrades available to meet current Building Regulations
  • Full workmanship guarantee on completed installations
Flat Roof Installation & Replacement completed by KNJ Roofing in Dorset
Our Process

How We Approach Flat Roof Installation & Replacement

  1. Free site survey and measure-up

  2. Recommendation on the most suitable roofing system

  3. Removal of the old roof covering (where applicable)

  4. Installation of deck, insulation and the new waterproof membrane

  5. Final inspection and guarantee documentation

Other Services

Explore Our Other Flat Roofing Services

GRP Fibreglass Roofing

A seamless, glass-reinforced-plastic flat roof system built for long-term, low-maintenance waterproofing.

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EPDM Rubber Roofing

A single-ply rubber membrane roof system known for flexibility and a long service life.

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Felt Roofing

Modern high-performance felt and torch-on systems for cost-effective flat roof waterproofing.

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Coverage

Flat Roof Installation & Replacement Across Dorset

We carry out flat roof installation & replacement work throughout the following areas.

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