We replace and overlay deteriorated flat roofs with new built-up bituminous systems, torch applied or self adhesive, with a mineral finish that encapsulates the whole roof area. Every system we install carries BBA certification and NFRC approval, and the build-up is designed to your building after our own survey rather than picked from a price list.
Where the existing covering has failed or the deck underneath is suspect, it comes off and the roof is rebuilt from the deck up. Where the substrate is sound and dry, the existing covering is prepared and overlaid, which keeps the building watertight throughout and takes days off the programme. The survey tells us which, and the report tells you why.
A two or three layer built-up system with a mineral cap sheet is the standard specification, but the layers change with the roof. Warm roof build-ups add a vapour control layer and rigid insulation to bring the roof up to current thermal standards, and tapered insulation puts falls into a roof that never had any.
On occupied schools, hospitals and sites with a hot works restriction we install self adhesive and cold applied membranes, so there is no naked flame on the roof. Where torch application is permitted it remains the fastest and most robust way to bond the cap sheet. Both come with the same manufacturer guarantee.
Because we are approved installers for the manufacturers we use, every roof is inspected and signed off by them and carries an insurance backed materials and workmanship guarantee. Periods run from 10 to 25 years depending on the system chosen, and the guarantee is issued to the building owner, not to us.
A £1.5 million refurbishment of ten building roofs across a live city centre campus, phased around teaching and access constraints, with the...
A 1,950 square metre strip of the existing waterproofing to the woodwool deck, deck replacement in areas, new rooflights and windows, alterations to...
A two layer bituminous membrane overlay across 1,000 square metres of school roof, every rooflight replaced, and a new PV system installed on...
A Bauder specification for a special school in Ipswich: gutters and details stripped out, a full warm roof system to the gutters with new 60mm FATE...
A storm damage re-deck for SDL Bigwoods with a temporary roof over the building and residents housed throughout. New 18mm plywood deck with joist...
A modern SBS modified bitumen system, laid as a two or three layer build-up and detailed correctly, is guaranteed for up to 25 years and will normally outlast that. The roofs we are asked to replace are usually 1970s and 1980s oxidised bitumen felts that were only ever going to last 15 years, so the comparison flatters the older material.
Often, yes. If the survey shows the existing covering is well bonded, the insulation underneath is dry and the deck is sound, an overlay is the lower cost and lower disruption option. Core samples and a moisture survey settle the question before we price it. If the insulation is wet, overlaying only traps the water, so we strip.
Most of our work is on occupied buildings. Schools during term, offices with tenants and factories in production are normal for us. Cold applied systems remove the hot works question, phasing keeps areas watertight overnight, and our contracts manager plans deliveries and access around how the building is actually used.
We are approved installers for Bauder, IKO, Soprema, Axter, Alumasc, Garland, Sika, BMI Icopal and others. The specification names the system, the manufacturer inspects the work, and the guarantee comes from them. That approved status is what makes a 20 year insurance backed guarantee possible.
Nothing. A surveyor attends site, inspects the roof and its details, takes core samples where needed and photographs everything. You receive a written report with the findings, options and budget costs. It is the same report whether you go ahead with us or not.
Nationwide, with the survey and the site team coming from whichever office is closer. Pick your division and the phone numbers on this page follow.
Covering the West and East Midlands, the South, the South West, East Anglia and the home counties from Jubilee Estate, Gorsey Lane, Coleshill.
The Midlands divisionCovering the North West, the North East, Yorkshire, Cumbria and Scotland from Riverside, Mountbatten Way, Congleton.
The North divisionSend us the outline or the tender documents and a surveyor will come back to you, normally the same working day. The survey and report are free.
Send Absolute Waterproofing your roofing enquiry or tender. Give us the outline below and one of our surveyors will come back to you, usually the same working day.