Mastic Sealing in Clewer
Mastic sealing for building owners, managing agents and housing associations throughout Clewer and nearby, carried out by CSCS-carded applicators. Fully insured and CHAS accredited.
- Mastic failing across several blocks on an estate
- Water getting in round frames after rain
- Occupiers reporting cold air round windows
Need mastic sealing in Clewer?
Share the site address and what’s failing, and we’ll reply with a fixed quote or arrange a visit.
What we can’t put right
Part of a good diagnosis is knowing where sealant stops. You’ll hear from us if the cause turns out to be any of the following:
- Old mastic suspected of containing asbestos, which must be tested and dealt with by a specialist first
- Broken glass or failed sealed units
- Failed window or door frames, which need a window contractor
If you are not sure, just give us a call on 01277 525 020 or use the quote form and we’ll give you a straight answer before you book.
Where we work in Clewer
- External wall and movement joints
- Window and door perimeters on blocks
- Communal kitchens and washrooms
- Shopfronts below residential blocks
- Balcony and threshold joints
- Communal entrances and stairwells
About our mastic sealing in Clewer
Across Clewer and the rest of Windsor and Maidenhead, we work the same way: send details, get a fixed quote, we seal, and the work is guaranteed. Addresses, photographs of typical joints and a rough idea of quantities let us give a quick quote or we can visit. If you are dealing with brittle perimeter mastic across a building and draught complaints from residents or tenants, we can put it right. Whoever orders the work in Clewer, the brief is typically the same: a fixed quote, no surprises on site and a 12-month guarantee behind the result.
Places the size of Clewer typically have some housing association stock, small blocks and mixed-use buildings. Their window perimeters and external joints need renewing as the mastic ages.
A 12-month guarantee applies to all our work in Windsor and Maidenhead. Should something we installed fail, speak to us on 01277 525 020 or email drawings and photos and we’ll come back to it.
- Location
- Clewer (SL4)
- Region
- Windsor and Maidenhead
- Cover
- A 12-month guarantee
- Price
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Page updated
- 3 November 2026
Planned mastic for Clewer portfolios
At about 23 miles from central London, Clewer is within reach of the capital. Managed blocks of flats are a big part of commuter-belt property. Clewer sits in one of the drier corners of the country, the South East. Outside mastic still needs a dry joint and the right temperature, and south- and west-facing elevations, which take the most sun and rain, often age first.
Schools and community buildings such as St Edward's Catholic First School need frame and external mastic kept sound like any building. Landlords with units on estates such as Slough Retail Park (2 miles north of Clewer) can bring frame, door and external mastic across several units into one programme.
Clewer is about 1 mile north of Windsor, in Windsor and Maidenhead. We cover Clewer, and jobs here get the same fixed quote and 12-month guarantee as anywhere else. Clewer is one of 60 places we cover in Windsor and Maidenhead. Our Reading page has more on work in that area, about 15 miles away.
Business premises anywhere in SL4 are within our area for mastic joints. If your site is on Oak Lane, Vale Road and Mill Lane or close by, send details and we will quote for mastic joints. With the A308 and A332 nearby, Clewer is straightforward for us to reach. Close to Clewer, our area also takes in Windsor (1 mile south), Eton (1 mile north-east), Eton Wick (1 mile north-west), Boveney (1 mile west) and Dedworth (1 mile south-west). Nearby towns on our patch include Maidenhead (5 miles north-west), Boyn Hill (5 miles west), Cookham (7 miles north-west), Furze Platt (6 miles north-west), Broomhall (6 miles south) and South Ascot (6 miles south).
Near you in Clewer
Recent enquiries here include premises near The Windsor Boys' School, The Windsor Boys' School and The Vansittart Arms and the streets around them. For rail, the closest station is Windsor & Eton Central station, roughly 0.7 miles east of the centre. Nearby you will also find Museum of Antiquities (0.7 miles north-east) and King Edward VII Hospital (1 mile south-east). Not far away are Taplow Lake and Bray Pit.
Diagnose, treat, sign off
Tell us your site hours and access windows and we’ll plan around them. While we’re working, the area stays contained and tidy, and we check in with your contact before moving on to each new area. Work in places the size of Clewer is planned as a single visit where we can. Photos with rough sizes let us arrive with everything needed.
- A building-by-building inspection lists the failed joints.
- You get a fixed quote, per block or for the whole programme.
- We agree the programme and dates with you.
- Old mastic is removed and the joint faces prepared.
- New sealant goes in with backing rod and primer where needed.
- Each building is checked and signed off with the 12-month guarantee.
Getting the site ready
- Send asbestos survey details if the building is pre-2000
- Send any specification or drawings in advance
- Point out any areas we must not close
Request a quote
Tell us about the building, the joints and when you need the work done, and a fixed quote will follow. To get it moving, ring 01277 525 020 or email us.
Advice
Questions about Clewer
Does your area include sites such as Slough Retail Park, near Clewer?
Yes. We cover Clewer and the area around it, including industrial estates, business parks and retail parks such as Slough Retail Park. Send details of the unit and the work through our quote form for a quick quote.
Can work in a care setting near Clewer go ahead while residents are there?
Yes, with the manager deciding the order and timing of rooms. Any site rules, from signing in to infection control, are agreed before we start.
Do you work to architects’ specifications?
Yes. We follow the specification, along with the manufacturer’s installation guidance, and we raise anything unclear before work begins.
Is mastic sealing guaranteed?
Our workmanship carries a 12-month guarantee and we hold public liability insurance.
Will you quote for a small job?
Single areas, one-off repairs and whole buildings are all quoted the same way: details, then a fixed price, then sealing, then a 12-month guarantee.
Do you work for managing agents and housing associations?
Yes. Managing agents, property factors in Scotland, housing associations and landlords with block or commercial portfolios are our main clients for this work, and we quote building by building or as a programme.
How long does a job like this take?
That varies with the scale of the job, but the work normally takes one or more days per building, depending on the joint lengths and the access. For bigger or phased jobs, we will set out a timescale with the quote.
What else we do in Clewer
After the work
After handover, these steps help:
- List the paperwork your organisation requires when you send details
- Start inspections with the most exposed faces
- Group repairs into a planned programme
- Include mastic in your cyclical inspections
If paintable sealant was used, decoration can follow once it has cured. Silicone normally can’t be painted, so keep decorators off it unless told otherwise.
Budgets are easier to plan when sealant is part of planned maintenance. A programme can start with the worst buildings and work down the list.
Signs you need mastic sealing in Clewer
Communal entrances and corridors see a lot of wear, with joints near the floor and around doors suffering most. Cleaning products add to the wear.
Things that typically lead to an enquiry:
- Cracked, hardened mastic round windows on a block
- Draught complaints from residents or tenants
- Patchy repairs in mismatched sealant
- Communal area joints that look neglected
Student accommodation around universities such as Royal Holloway University, 4.9 miles south-east of Clewer, is normally managed block by block, which suits a planned mastic programme.
Comparing quotes
- What the guarantee covers, and for how long
- What site paperwork they can supply
- How joint depth will be controlled
- Proof of insurance
Why deal with it now?
A bead run over old mastic can look like a repair. It doesn’t bond and normally fails within a short time. Full removal and proper preparation is what lasts. Sealant hardens, cracks and loses grip with age, UV and movement. Renewing it in good time keeps the building weathertight.
We don’t publish prices, because the scope varies so much from one building to the next. Call for a quote.
Why appoint us
- Specification-led, product-correct work
- Public liability insurance in place
- Workmanship guaranteed for 12 months
- A range of standard colours, depending on the product
Read our cost guide and how we’re accredited.
What affects the price in Clewer
These are the things that shape the price:
- Access and working height
- Phasing around occupants
- Site requirements such as inductions and permits
- Quantities, in metres or numbers
Cost follows what’s involved: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a fixed quote and we will explain how it’s made up.
What to include in your enquiry
Whether it’s one area or a whole building, the same details help:
- Specification clauses that apply
- What the building is and how it’s used
- Any dates the work must fit around
- Drawings or a marked-up plan, if available
Photos, drawings or a schedule of the joints are often enough for a fixed quote. Where a site visit makes more sense, we’ll arrange one.