Broomhall mastic sealing
Mastic sealing for building owners, managing agents and housing associations across Broomhall, by CSCS-carded applicators. Fully insured and CHAS accredited.
- Leaks at window and door perimeters
- Repeated reactive repairs to the same buildings
- A mix of products and colours from past repairs
Mastic sealing in Broomhall
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Looking after the joints
Once the work is signed off, these steps help:
- Log resealing dates block by block
- Mention RAMS, insurance or CSCS requirements up front
- Protect low-level joints in entrances
- Avoid piecemeal callouts where you can
Where a paintable product was specified, it can be painted after curing. Silicone usually can’t be painted, so keep decorators off it.
The longer failed joints are left, the more likely the substrate edges break up. Then the edges may need repairing first and the job grows.
How we handle mastic sealing in Broomhall
On a residential block, the work happens around people’s lives. The sequence, the areas and the dates are settled with you so you can let residents know what is happening. Entrances and stairwells are kept in use while we work. We work on communal entrances and stairwells, external wall and movement joints and communal kitchens and washrooms, and what we’re called in for most is worn sealant at communal door frames and complaints coming in block by block. Whoever orders the work in Broomhall, the brief is usually the same: a clear scope, tidy work and joints that don’t fail again.
Converted and older buildings in and around Broomhall often put modern windows into old walls. Perimeter joints need a sealant that suits both frame and masonry.
We stand by our work with a 12-month guarantee. It covers how we prepared and applied the sealant.
- Where
- Broomhall (SL5)
- Region
- Windsor and Maidenhead
- Cover
- 12 months on every job
- Quote
- Quoted before any work starts
- Phone
- 01277 525 020
- Updated
- 3 November 2026
Common questions from Broomhall clients
Will you work in a care home in Broomhall without moving residents out?
Yes. We work around residents’ routines, a room or two at a time. Tell us about any infection-control or safeguarding requirements and we’ll work to them.
Is a smaller place like Broomhall outside your area?
No. Places such as Broomhall are covered as much as the big towns. London and every South East county are within our area. Send photographs and a list of what needs doing, and we’ll plan the job to need as few trips as possible.
Do you guarantee the mastic work?
Every building we reseal has a 12-month guarantee. It covers our workmanship, not later building movement, damage or frame failures.
Can weather delay the job?
It can, when the joints are outside. Wet joints and cold, damp or frosty conditions stop the sealant bonding properly, so we watch the forecast and rearrange outside work if we have to. Internal work is far less affected.
How many days will you need on site?
It depends on the scope, but the work typically takes one or more days per building, depending on the joint lengths and the access. For bigger or phased jobs, we’ll set out a timescale with the quote.
Is it fine to apply new sealant on top of old?
No. Overlaying old sealant is a frequent cause of early failure, so it all comes out first.
How do you choose the sealant?
Where there’s a specification, we use the product it names. Otherwise, we recommend a product to suit the joint’s movement, the substrate and the conditions, following the manufacturer’s guidance.
When it isn’t the sealant
A proper diagnosis includes knowing what sealant can’t do. You will hear from us if the cause turns out to be one of these:
- Cracked or crumbling render, brick or stone at the joint edges (we’ll tell you if so)
- Glazing that needs replacing
- Materials that need asbestos testing before work
If you are not sure, just phone 01277 525 020 or email the details over and we will give you a straight answer before you book.
Surfaces we seal
- External wall and movement joints
- Balcony and threshold joints
- Communal entrances and stairwells
- Shopfronts below residential blocks
- Communal kitchens and washrooms
- Window and door perimeters on blocks
Should maintenance staff do it?
The visible bead is only part of the job. Backing rod, primer where specified and a joint designed to move with the building are where general trades tend to cut corners.
A short, simple internal joint is often within reach of a maintenance team. The usual problems come from preparation: new sealant over old, damp or dusty faces, or the wrong product for the movement.
Cost factors for mastic joints
We price every job individually. The main factors are:
- Which sealant the job calls for
- Removal of failed or old sealant
- Backing rod, priming and other preparation
- Phasing around occupants
The product called for affects the cost, and so does the preparation, from cutting out to priming and backing rod. Access, phasing and site requirements come into it too.
What to include in your enquiry
We can often quote from photographs and a few details. It helps to include:
- The site address and postcode
- Anything awkward about access or site hours
- Your programme or deadline
- Approximate linear metres or a joint schedule
Tell us about the building, the joints and when you need the work done, and we’ll put a fixed quote together. The easiest way is to give us a call on 01277 525 020 or send details through our quote form.
Planned mastic for Broomhall portfolios
At about 24 miles from central London, Broomhall is within reach of the capital. Managed blocks of flats are a big part of commuter-belt property. Rainfall across the South East, Broomhall included, is lower than in many parts of the UK. Outside work still depends on dry joints, while the elevations that take the most sun tend to show hardened mastic first.
Property owners at sites such as Ascot Business Park, 2.2 miles north-west of Broomhall, can have mastic renewed between lettings. Student accommodation around universities such as Imperial College Silwood Park Campus, 1.5 miles to the north-west of Broomhall, is usually managed block by block, which suits a planned mastic programme. Churches, halls and community buildings such as Holy Trinity Church are looked after by trustees and committees like any other owner, and their frames, doors and external joints need mastic renewed in time.
Broomhall is about 4 miles south-west of Egham, in Windsor and Maidenhead. Anywhere in SL5, the process is the same: send details, get a fixed quote, we seal, and the work is guaranteed. Broomhall is one of 60 places in Windsor and Maidenhead on our list for mastic joints. There’s a separate page for Reading, roughly 15 miles from Broomhall.
We take on mastic joints across the SL5 postcode area, whatever the building. For a building on London Road, Abbey Wood and Cedar Drive or nearby, send details and we will quote for mastic joints. Close to Broomhall, our area also takes in Sunningdale (1 mile north-west), Brick Hill (1 mile south), South Ascot (2 miles west), Windlesham (2 miles south-west) and Chobham (3 miles south-east). Nearby towns on our patch include Maidenhead (10 miles north-west), Windsor (6 miles north), Boyn Hill (9 miles north-west), Cookham (12 miles north), Furze Platt (11 miles north-west) and Dedworth (6 miles north). Among the larger centres in Windsor and Maidenhead is Broomhall, and we take on mastic joints for its commercial and public buildings.
Around Broomhall
In Broomhall, that means premises near Charters School, Silwood Park and Holy Trinity CofE Primary School, among other places. There’s a railway station in Broomhall itself: Sunningdale station. Nearby you will also find Chobham Museum (3.3 miles south) and Heatherwood Hospital (2.7 miles north-west). Green spaces nearby include Gracious Pond and Virginia Water Lake.
Places near Broomhall
More services for Broomhall
Why it’s worth doing now in Broomhall
Resealing ahead of leaks keeps it to a maintenance task. After water has got in, there may be damp, damaged plaster or decoration to put right too, and the complaints come with it. Over time, UV, weather and movement wear any sealant out. Replacing it before it fails keeps water out.
Cost follows what’s involved: stripping out, preparation, sealing, access and phasing. Call for a quote.
Why clients in Broomhall choose us
- Fully insured, including public liability cover
- Work carried out by CSCS-carded applicators
- Constructionline member
- A range of standard colours, depending on the product
Read what affects the cost or our accreditations and insurance.
From enquiry to sign-off
A typical day starts with protection: masking tape along the joint edges and sheeting over anything nearby. The work itself typically takes anything from a day to a few weeks, depending on the number of buildings and joints, and we clear our waste as we work. Several jobs near Broomhall can be grouped on one trip. Mention the building’s opening times and we’ll work within them.
- We inspect each building and record the joints that have failed.
- The quote is fixed and split as suits you.
- Dates and areas are agreed so occupiers can be told.
- Old mastic is removed and the joint faces prepared.
- Joints are resealed and tooled.
- We check the finished work and confirm the guarantee.
Preparing the site
- Explain the parking and delivery arrangements
- Send your site hours and access windows
- Warn occupants and staff about the work
Ask for a quote
Send details, get a quote, we seal, guaranteed: that’s how every job runs. To take the first step, call the office on 01277 525 020 or send photos by email.