About us

Providing a complete range of services with over 35 years of experience
Get in touch with us

About us

J & M is a privately owned family business based in Gloucester, Gloucestershire and is managed and run by Mark Williams who has over 35 years experience in the building industry and is from second generation family in building and construction.

from Forest Damproofing

We started Forest Damproofing in 1981. The change of name to J & M reflects the wider range of expertise which now encompasses a large range of remedial industry services.

The future

Researching and reviewing new products and systems to ensure the most appropriate are used. Every property is different and we make sure any remedial treatments are tailor-made to solve the problem. The team offer practical advice and the best solutions to customers unique requirements.

keeping safe

J & M strive to keep properties safe and protected from the elements and treat remedial problems in the most effective manner.

We have over 35 years experience.
Our range of services

The company provide a complete range of remedial services including damp proofing, structural waterproofing, dry rot control, timber treatment, specialist membrane installation, basement conversion, tanking, condensation control, plastering contractors, radon protection and solar powered ventialtion to clients across Gloucestershire and the surrounding towns and counties including Cheltenham, Tewkesbury, Stroud, The Cotswolds, Monmouthshire, Forest of Dean, Hereford and Worcester.

Mark is assisted by his team of qualified technicians and Jill Williams, who carries out secretarial and support services for the company.