Mastic sealant contractors in Bisham
Planning work on a mastic joint in Bisham? We look at it, seal it with the right product and hand it over with a 12-month guarantee.
- Brittle perimeter mastic across a building
- Occupiers reporting cold air round windows
- Worn sealant at communal door frames
Mastic sealing in Bisham
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
Mastic sealing in Bisham
In buildings from before 2000, some old mastics contain asbestos. Before we disturb it, we ask to see the asbestos register or survey and if it’s suspected, work stops until it’s tested. We don’t remove asbestos-containing materials. Site teams most often ask us about damaged joints in communal entrances and corridors and estate-wide sealant that is simply worn out, across communal entrances and stairwells, window and door perimeters on blocks and shopfronts below residential blocks. Sealant applicators who only do sealant are a different proposition from a general trade with a gun in the van: on jobs in Bisham, preparation and product choice get the time they need.
Owners and agents with buildings around smaller places such as Bisham tend to manage small terraces of association properties, converted barns and commercial units. Mastic around frames and on external joints wears out in time, whatever the building.
Our workmanship is guaranteed for 12 months, in Bisham as everywhere else we work. If our installation lets you down in that time, we return and fix it.
- Location
- Bisham (SL7)
- Region
- Windsor and Maidenhead
- Cover
- 12 months on every job
- Quotes
- Quoted before any work starts
- Phone
- 01277 525 020
- Page updated
- 3 November 2026
General trades versus a specialist
What you see is the finished bead, but most of the work is hidden. Correct depth, the right primer and a sealant matched to the movement are where general trades tend to cut corners.
For most general trades, sealant is a sideline. A specialist brings correct preparation, depth control with backing rod and a product suited to that particular joint, which is what makes a joint last.
How the job changes by surface
Tenement and older buildings
Natural stone can be marked by the wrong sealant, so we pick a grade that won’t mark it.
External movement joints
Brickwork, blockwork and panel joints let a building move. Failed sealant in a movement joint lets water in.
Leave it or put it right?
Failed perimeter mastic lets cold air in around frames and the windows typically get the blame. In many cases, new perimeter sealant deals with it where the frames themselves are sound. One visit to deal with every failing joint makes more sense than several trips to a place like Bisham, rather than one at a time. Send photos of each area and we’ll quote for the lot.
The specified product makes a difference, as does the preparation each joint needs, from cutting out to priming and backing rod. Access, phasing and site requirements come into it too.
Why clients in Bisham choose us
- Over 20 years of commercial sealing
- RAL and finish matching where the product range allows
- CHAS accredited
- One number for every site we cover
Read our cost guide or how we’re accredited.
For owners and agents in Bisham
Rainfall across the South East, Bisham included, is lower than in many parts of the UK. Even so, frame mastic only goes on in dry, workable conditions, and elevations facing the sun and the prevailing weather are normally where frame mastic ages first. Bisham lies roughly 30 miles out from central London. Managed blocks of flats are a big part of commuter-belt property.
If you manage student housing near a university such as Buckinghamshire New University (Wycombe Campus) (5 miles north of Bisham), the summer turnaround is the time for mastic. Churches, halls and community buildings such as Church of All Saints are looked after by trustees and committees like any other owner, and their frames, doors and external joints need mastic renewed in time.
Bisham is about 1 mile south of Marlow, in Windsor and Maidenhead. Any commercial site in Bisham is covered. Our Windsor and Maidenhead coverage takes in 60 places. Sites around Reading have their own page, roughly 11 miles from Bisham.
Business premises anywhere in SL7 are within our area for mastic joints. For a building on Bisham Court, Marlow Road and Vansittart Road or nearby, we can quote for mastic joints. If your building is just outside Bisham, we cover Temple (1 mile south-west), Marlow (1 mile north), Cookham Dean (1 mile east), Pinkneys Green (2 miles south) and Cookham (2 miles east). Further afield, our area takes in Maidenhead (3 miles south-east), Windsor (8 miles south-east), Boyn Hill (4 miles south-east), Dedworth (8 miles south-east), Broomhall (13 miles south-east) and South Ascot (12 miles south).
Landmarks near Bisham
Locally, jobs take us to sites close to Sir William Borlase's Grammar School and The Bull Inn. The nearest railway station is Marlow station, about 1 mile north of the centre. Other landmarks nearby include Marlow Museum (0.7 miles north) and Marlow Community Hospital (1.1 miles north). Green spaces nearby include Taplow Lake and Weycock Hill.
Diagnose, treat, sign off
Before any cutting starts, the area is protected: tape along each joint edge and covers over finishes, stock and equipment close by. On site, the work normally takes one or more days per building, depending on the joint lengths and the access, and our waste is bagged and taken away as we go. For work around Bisham, we aim to finish in one visit, so we ask for photographs and rough sizes first. That way the right products come on the day.
- We check the asbestos register for older buildings and look at the joints.
- The products and programme are set out in a fixed quote.
- We strip out the old sealant.
- Joint faces are cleaned, backed and resealed.
- Buildings are completed in turn.
What we need from you
- Explain the parking and delivery arrangements
- Let building users know which areas are affected
- Share your working hours and any access restrictions
Ask for a quote
Send details, get a quote, we seal, guaranteed: that’s how every job runs. The first step is to give us a call on 01277 525 020 or email drawings and photos with what you know.
Read more
Do you need mastic sealing in Bisham?
Buildings move with temperature and moisture, and the sealant takes up that movement. If the joint or the product wasn’t suited to the movement, it splits long before it should.
Common reasons buildings call us in:
- Cracked, hardened mastic round windows on a block
- Worn sealant at communal door frames
- Repeated reactive repairs to the same buildings
- Failed external movement joints
If your remit includes a building such as Bisham Church of England Academy, frame and door mastic can be programmed for the holidays.
Questions to ask before you book
- Their pre-qualification and accreditations
- How the joint faces will be prepared and primed
- Which product they’ll use, and why it suits the joint
- Their plan for phasing and protecting the area
Common questions from Bisham clients
We manage a building near Marlow station. Can you help?
Yes, and several blocks can go on one quote. We work to your notice and access arrangements.
Is Bisham too small for you to travel to?
No. Small places get the same service as large ones. Our area covers London and the South East counties. Where we can, we group nearby jobs to make the most of each trip.
Do you work for managing agents and housing associations?
We do. Most of our mastic sealing is for agents, factors, housing associations and portfolio landlords and work can be quoted per building or as a whole.
How long will the new sealant last?
It depends on movement, UV and weather, cleaning, traffic and the product. Sealant joints are maintenance items, so inspect them regularly.
How do you handle work on occupied blocks?
The work is planned around occupiers. We agree the programme so you can notify occupiers and communal access is kept open.
What if the old mastic contains asbestos?
We don’t remove asbestos-containing materials. Anything suspect is tested before we carry on, and the duty to manage asbestos sits with the dutyholder.
Can you work to our specification?
Yes. Include it with the drawings when you ask for a quote, and the quote will be based on it.
Nearby places to Bisham
What else we do in Bisham
Aftercare for building managers
For the best life from the joints:
- Share the asbestos register when you send details
- Group repairs into a planned programme
- Look at the sunniest and most exposed elevations first
- List the paperwork your organisation requires when you send details
Our workmanship is covered for 12 months, so report any failure in that time. Beyond that, routine checks spot the next round of repairs.
Budgets are easier to plan when sealant is part of planned maintenance. We can quote buildings in priority order and work down the list.