Mastic Sealing in Crowthorne
Looking for mastic sealing in Crowthorne? Send us the details for a fixed quote, backed by a 12-month guarantee on the work.
- Estate-wide sealant that is simply worn out
- Communal area joints that look neglected
- No planned programme for sealant
Need mastic sealing in Crowthorne?
Send drawings, photos or a joint schedule, or tell us about the site, and we’ll come back with a fixed quote.
Your questions answered
Will you price a mastic programme across our Crowthorne portfolio?
Yes, we quote for single buildings and for programmes across several blocks. Send the addresses and photographs and we will give a fixed quote.
Will you take on work at estates like Wellington Business Park, close to Crowthorne?
Yes. Estates, retail parks and business parks around Crowthorne, Wellington Business Park among them, are all within reach. Send details of the unit and the work through our quote form for a quick quote.
Will residents or tenants be disturbed?
Residents and tenants carry on as normal. If any flats or units need access, we will tell you in advance so you can arrange it with occupiers.
Can you send RAMS and CSCS details before starting?
Our credentials include CHAS, Constructionline and public liability insurance. Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote.
Does the weather affect the work?
It can, for external work. Sealant won’t bond properly to a wet or frosty joint, so we watch the forecast and rearrange outside work if we have to. Indoors, the weather is rarely a problem.
What guarantee do you give on resealing?
There is a 12-month guarantee on our workmanship and we hold public liability insurance.
Do you work to architects’ specifications?
Yes. The specification and the manufacturer’s installation guidance are what we work to.
About our mastic sealing in Crowthorne
Owners and agents usually inherit a building’s mastic rather than choose it and it slowly wears out: window perimeters, door frames, external joints and communal junctions all rely on it. When it hardens, splits or pulls away, water and draughts follow along with complaints. We work on communal kitchens and washrooms, communal entrances and stairwells and balcony and threshold joints, and what we’re called in for most is communal area joints that look neglected and water getting in round frames after rain. Searching for sealant specialists in Crowthorne? We have been sealing commercial buildings since 2005, CHAS accredited and a Constructionline member.
For housing associations with stock in a town such as Crowthorne, mastic is easiest to handle as a planned programme. Residents are notified through the association, and work moves building to building.
Guaranteed is the last step of every job. You get a 12-month guarantee on our workmanship, and the quote explains what it covers.
- Location
- Crowthorne (RG45, RG40)
- Region
- Wokingham
- Cover
- 12 months on our workmanship
- Quote
- Fixed quote, scope in writing
- Call
- 01277 525 020
- Updated
- 3 November 2026
When to bring in a specialist
Paperwork matters too. Main contractors and clients often ask for CSCS cards, RAMS and insurance details, and our CSCS-carded applicators are used to working under those rules.
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.
After the work
Cleaning and maintenance staff play a part too. Pass these on to them:
- Make it easy for occupiers to report draughts
- Plan resealing building by building rather than complaint by complaint
- Include mastic in your cyclical inspections
- Start inspections with the most exposed faces
Where a paintable product was specified, it can be painted after curing. Non-paintable silicone shouldn’t be painted over unless told otherwise.
Mastic fails gradually, then all at once in a wet spell. Resealing when cracking first shows avoids water damage and saves internal repairs.
Honest limits
Some faults sit outside our scope, and we point that out rather than sealing over them:
- Substrate edges that need repairing first
- Leaks from above rather than through a joint
- Leaks through the frame itself rather than the perimeter
If you’re not sure, just call the office on 01277 525 020 or send details through our quote form and we will give you a straight answer.
Surfaces we seal
- Communal entrances and stairwells
- External wall and movement joints
- Communal kitchens and washrooms
- Balcony and threshold joints
- Shopfronts below residential blocks
- Window and door perimeters on blocks
Surface by surface
Window and door perimeters on blocks
Blocks have a mix of frame materials, and the product is matched to the frame material and the masonry. We will confirm the colours available for the specified product.
External movement joints
Brickwork, blockwork and panel joints let a building move. Once that sealant goes, rain can reach the wall.
Also near Crowthorne
Also in Crowthorne
Leave it or put it right?
Adding sealant to cyclical maintenance is an easy win. Waiting until leaks appear means working under pressure and less choice about when. In a town such as Crowthorne, a lot of buildings are older and have been altered over time, so joints between old and new are often the first to go. Renewing them before water gets in protects the fabric.
Pricing mastic joints depends on quantities, condition and access, plus any specification you are working to. Call for a quote.
Why us?
- Over 20 years of commercial sealing
- Constructionline member
- Clear, fixed quotes
- Coloured sealants to suit the setting, where available
Take a look at our cost guide and our accreditations.
Diagnose, treat, 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 our waste is bagged and taken away as we go. If you have more than one building in Crowthorne, they can often be done on the same visit, with one quote covering them. Give us your access times and we will fit the work in.
- We inspect the joints, building by building, and record what has failed and why.
- You get a fixed quote, priced per building where that helps your budgeting.
- Dates, areas and access are agreed so residents or tenants can be told in advance.
- Failed mastic is removed and the faces taken back to sound, dry material.
- Deep joints get backing rod, faces are primed if the manufacturer specifies it, then the joint is sealed and tooled.
- Completed joints are inspected and carry a 12-month workmanship guarantee.
Before we start on site
- Share the asbestos register for older buildings
- Tell us what induction or permit system the site runs
- Have the specification and drawings to hand
Quotes
We quote a fixed sum against the scope you give us, so you know the figure before anyone is on site. To ask for one, call the office on 01277 525 020 or email drawings and photos.
Read more
Blocks and managed buildings in Crowthorne
The South East is one of the drier parts of the UK. External mastic still waits for dry faces and the right temperature, while the elevations that take the most sun tend to show hardened mastic first. Crowthorne lies roughly 32 miles out from central London. Managed blocks of flats are a big part of commuter-belt property.
Trustees of buildings like Crowthorne Methodist Church can bring frame and external mastic into a planned maintenance list. If you own or manage units on a site such as Wellington Business Park, 1 mile south-west of Crowthorne, failed mastic on frames, door surrounds and external joints can be dealt with unit by unit. Site managers at schools like Crowthorne Church of England Primary School can fit frame mastic into the summer works.
Crowthorne is about 3 miles south-west of Bracknell, in Wokingham. If you are looking for mastic sealing in Crowthorne, we can help. We work across 42 places in Wokingham. Our Reading page has more on work in that area (9 miles or so).
Business premises anywhere in RG45 and RG40 are within our area. Among the streets we cover are Church Road East, Church Road West and High Street, and sites on any of them can send details for a fixed quote. With the A321 and B3348 nearby, Crowthorne is straightforward for us to reach. Just outside Crowthorne, we also work in Owlsmoor (1 mile south-east), Home Farm (1 mile north-east), Wooden Hill (2 miles north-east), Sandhurst (2 miles south) and Hanworth (2 miles north-east). Nearby towns on our patch include Wokingham (3 miles north-west), Woodley (7 miles north-west), Earley (7 miles north-west), Lower Earley (6 miles north-west), Winnersh (5 miles north-west) and Shinfield (7 miles west). As one of the bigger centres in Wokingham, Crowthorne has a broad mix of commercial, public and industrial buildings, and we cover them all.
Local landmarks in Crowthorne
We work on buildings around King Edward VI Aston School, The Prince pub and Edgbarrow Woods. The closest station to Crowthorne is Crowthorne station, roughly 1 mile south-west. Nearby you’ll also find The Lexicon (3.7 miles north-east) and Pinewood Hospital (0.9 miles north). For a walk, there’s Wildmoor Heath and Heath Lake.