The Mastic Doctor team standing beside their branded vans outside an office building
Windsor and Maidenhead · England

Construction Mastic in Maidenhead

We carry out mastic packages for new-build and refurbishment projects in Maidenhead and the surrounding area. Send photos or drawings for a fixed quote.

  • Caulk cracking where joints are moving more than expected
  • Existing joints on a refurb that need cutting out and resealing
  • Perimeter gaps outside the sealant’s range
1
Send details
Drawings, photos, a joint schedule or a site visit.
2
Get a quote
A fixed quote for the work, with the scope in writing.
3
We seal
Failed joints cut out, faces prepared, new sealant laid.
4
Guaranteed
12-month guarantee on our workmanship.
London, the South East & Scotland
CHAS & Constructionline
£5m public liability

Construction mastic for businesses in Maidenhead

Photos, a specification or a quick description of the joints is enough to start a fixed quote.

How a job runs

A typical day starts with protection: tape along each joint edge and covers over finishes, stock and equipment close by. On site, the work normally takes whatever the programme allows, since the work follows the trades as areas are released, and our waste is bagged and taken away as we go. For a town like Maidenhead, we try to group jobs for the same client into one visit. Give us your access times and we’ll fit the work in.

  1. We walk the site or review drawings to understand the package.
  2. A fixed quote sets out scope, products and phasing.
  3. Paperwork is agreed and applicators are inducted on site.
  4. Sealing follows the programme as areas are released.
  5. Any frame gaps or issues outside our scope are flagged to the site team.
  6. Final snagging is completed and the 12-month guarantee applies.

Before we start on site

  • Send any specification or drawings in advance
  • Warn occupants and staff about the work
  • Tell us what induction or permit system the site runs

Ask for a quote

To get a fixed quote, give us a call on 01277 525 020 or email drawings and photos with the site address and an outline of the work. You can also send details through our quote form.

Get a quick quote

Read more

About our construction mastic in Maidenhead

The programme rarely stands still, so the mastic package has to flex with it. The sequence is set with the site team and updated as plots or floors are handed over, so applicators arrive when areas are genuinely ready. Sealing too early only means coming back once others have damaged it. If you’re dealing with different trades sealing to different standards and oversized or tapered gaps around new frames, we can put it right, whatever the surface. A specialist sealant contractor works differently from a general builder: in Maidenhead, that means joint design, primers and backing rod as standard.

Older town-centre buildings in places like Maidenhead are often converted to new uses or extended, so new windows and cladding meet old masonry. Those junctions need a sealant and primer that suit both surfaces.

Our workmanship is guaranteed for 12 months, wherever the site is. If a joint we sealed fails because of how it was installed, we come back and put it right.

Place
Maidenhead (SL6)
Region
Windsor and Maidenhead
Guarantee
12 months on our workmanship
Price
Quoted before any work starts
Call
01277 525 020
Page updated
3 November 2026
Mastic Doctor team members lined up next to their branded vans outside an office building

Facades, frames and programmes in Maidenhead

Central London is about 27 miles from Maidenhead. Commuter-belt towns tend to see a steady flow of new flats, offices and commercial schemes, so mastic packages have to keep pace with busy programmes. Plenty of hotels sit less than 2 miles from Maidenhead. Hotel extensions and refits typically have to fit around bookings, so mastic dates are tight.

Hotels like Bear Hotel (to the east of Maidenhead) rarely close for long, so refurbishment mastic is phased floor by floor. Recladding or extending a unit at a site like Vanwall Business Park, 0.9 miles south-west of Maidenhead, brings panel joints and frame perimeters into the programme.

Maidenhead is about 27 miles west of London, in Windsor and Maidenhead. If you are looking for construction mastic in Maidenhead, we can help. Maidenhead is one of 60 places in Windsor and Maidenhead on our list for mastic packages. For work in that direction, see our Reading page, about 12 miles away.

We take on mastic packages across the SL6 postcode area. We cover commercial and managed buildings on High Street Mall, High Street and Laggan Square and the roads nearby. With the A4 and A308 nearby, Maidenhead is easy to get to with materials and equipment. Just outside Maidenhead, we also work in Boyn Hill (1 mile south-west), Furze Platt (1 mile north), Cox Green (1 mile south-west), Pinkneys Green (1 mile north-west) and Bray Wick (2 miles south-east). Nearby towns on our patch include Windsor (5 miles south-east), Dedworth (5 miles south-east), Broomhall (10 miles south-east), South Ascot (9 miles south), Datchet (7 miles east) and Old Windsor (8 miles south-east). Maidenhead is one of the busier places in Windsor and Maidenhead, and we take on mastic packages for its commercial and public buildings.

Around Maidenhead

Around Maidenhead, our work takes us to commercial buildings near Boyne Hill CofE Infant and Nursery School, Desborough College and The Windsor Castle pub. For rail, the closest station is Maidenhead station, about 0.5 miles south-east of the centre. Other landmarks nearby include The Reitlinger Bequest Museum (1.2 miles east) and St Mark's Hospital (0.6 miles west). The countryside around Maidenhead includes Weycock Hill and Taplow Lake.

Map of Maidenhead © OpenStreetMap contributors

For managing agents and facilities managers

Main contractors use us as their sealant subcontractor on new-build and refurbishment projects. Programme, specification and site rules come first, with CSCS-carded applicators on site.

Facilities managers want contractors who arrive with the paperwork sorted. Tell us what site paperwork you need, such as RAMS, an insurance certificate or CSCS details, and we will confirm with the quote.

How the quote is worked out

What shapes the price:

  • Joint width, depth and condition
  • Specialist products, such as fire-rated or hygienic sealants
  • Location, for remote and island sites
  • How much there is to seal

The price depends on the quantity of joints, how much old material needs removing and how the joints are reached. Call for a fixed quote when you’re ready.

What to include in your enquiry

It doesn’t need to be a full survey. A few details are enough to get going:

  • The product your specification calls for
  • The asbestos register, for older buildings
  • The postcode of the building
  • Your programme or deadline

Pricing a project or setting a maintenance budget? We will quote against your scope and drawings that you can work with. For a chat about it beforehand, call the office on 01277 525 020 or use the quote form.

What the job involves on each surface

Kitchens and utility areas

Kitchen joints are sealed after fitting and before final clean. A kitchen-suitable sealant is used, food-safe where food contact is possible.

Internal decorators’ caulk

Where the specification calls for it, acrylic decorators’ caulk goes on non-moving internal gaps before painting. It’s for gaps that stay still and get painted, and we use a flexible sealant where there’s movement.

Questions we are asked in Maidenhead

Do you take on work at healthcare sites like St Mark's Hospital?

Yes, provided the work is planned with the site’s estates team. The estates team’s permit system and infection-control rules come first, and the work is planned around them.

Can you keep pace with our programme in Maidenhead?

Yes. Send the programme and drawings, and we will plan the mastic to suit the stages. Any paperwork you need, from RAMS to our insurance certificate and CSCS details, is confirmed with the quote.

Will you just go over the old sealant?

No. We cut the old material out and clean the joint back before sealing, since fresh sealant will not bond reliably to aged material.

Can one quote cover more than one building?

Yes. We take on portfolio and planned maintenance work, planned site by site to suit how each building is used.

Are you fully insured?

Yes. We’re fully insured, and the certificate can go with your quote.

What happens if the weather stops external sealing?

External sealing goes ahead only with a dry joint inside the product’s temperature range. Wet or cold joints cause adhesion problems, so we wait rather than redo work.

What happens if old sealant might contain asbestos?

Some older mastics, especially in pre-2000 buildings, can contain asbestos. We check the asbestos register before cutting out old sealant in an older building, and if asbestos is suspected, work stops until it’s tested. Removing asbestos is a job for asbestos specialists, not us.

Signs you need construction mastic in Maidenhead

Value-engineered products sometimes end up in the wrong joints. A general-purpose silicone on a facade or a caulk in a wet area won’t perform like the specified product. We stick to the specified product, or put any alternative to you first.

Any of the following is a good reason to get the joints checked over:

  • Bath and shower joints scraped during the final clean
  • Window and door perimeters that won’t pass inspection
  • Mastic snags holding up handover
  • Failed sealant in an existing building being refurbished

School extensions, at buildings such as Claires Court Schools, typically run to the summer holidays, mastic included.

Comparing quotes

  • Their pre-qualification and accreditations
  • The named product and why it was chosen
  • Will CSCS-carded applicators be on site?
  • Can the work be phased to keep areas open?

Questions to ask before you appoint anyone

What we can’t put right

Our job is the joint, not everything around it. Sealant alone won’t deal with:

  • Approving fire stopping as compliant
  • Glazing units that are cracked or misted
  • Specifying the product where the designer hasn’t

Not sure which it is? You can call 01277 525 020 or send photos by email and we will tell you honestly before you book.

What we seal

  • Floor and skirting junctions
  • Window and door perimeters
  • Cladding and panel joints
  • Internal decorators’ caulk
  • Brick and block movement joints
  • Sanitary and kitchen joints
Accreditations

Trusted. Accredited. Insured.