Facade and window perimeter sealing in Farnborough, West Berkshire
Facade joint and window perimeter sealing on commercial buildings across Farnborough, by CSCS-carded applicators. Fully insured and CHAS accredited.
- New sealant peeling off old mastic
- Old perimeter mastic that has dried out
- Water coming in around window frames
Facade sealing across Farnborough
Photos, a specification or a quick description of the joints is enough to start a fixed quote.
How we handle facade sealing in Farnborough
Water ingress at window frames is a frequent reason facilities managers contact us. Failed perimeter sealant is a frequent cause, but not always. We will tell you if we think the leak is coming from somewhere sealant won’t fix. We work on coping and flashing joints, cladding panel joints and shopfront frames, and what we’re called in for most is patch repairs that keep failing and hard, chalky sealant that no longer flexes. Searching for sealant specialists in Farnborough? Mastic Doctor has worked for contractors, FMs and building owners since 2005.
Construction in and around smaller places such as Farnborough is often barn conversions, small groups of houses or extensions to halls and schools. Each still needs a proper mastic package: window perimeters, facade joints and internal sealant to the specification.
Our workmanship is guaranteed for 12 months. If our installation lets you down in that time, we return and fix it.
- Location
- Farnborough (OX12)
- Wider area
- West Berkshire
- Cover
- 12 months on every job
- Quote
- A fixed quote before we start
- Telephone
- 01277 525 020
- Page updated
- 3 November 2026
When it isn’t the sealant
Sealant solves a lot, but not everything, and we’d rather tell you before you spend money. These need a different solution:
- Leaks from roofs, gutters or failed flashings rather than sealant joints
- Movement beyond what any sealant can handle
- Damaged frames that need replacing
If in doubt, call the office on 01277 525 020 or email the details over and we’ll say what we think before you book.
Where we work in Farnborough
- Window and door perimeters
- Cladding panel joints
- Shopfront frames
- Coping and flashing joints
- Stone and brick facade joints
- Perimeter joints where frames meet the structure
New build and refits around Farnborough
Rainfall across the South East, Farnborough included, is lower than in many parts of the UK. Winter mornings still bring frost and condensation on frames and panels, so the external programme keeps a little slack. Farnborough lies roughly 55 miles out from central London. Building activity in the commuter belt runs from new flats near stations to business park refurbishments, and main contractors there need mastic that keeps to the programme.
Around Farnborough, as anywhere, a facade joint depends on its sizing, backing rod and preparation.
Farnborough is about 4 miles south-east of Wantage, in West Berkshire. Looking for facade sealing in Farnborough? We can help, as we do across West Berkshire. Our West Berkshire coverage takes in 140 places. Our Oxford page has more on work in that area.
Work on facade joints is covered throughout OX12, for business premises of every kind. If your building is just outside Farnborough, we cover Catmore (2 miles south-east), Brightwalton (2 miles south), Brightwalton Green (2 miles south), West Ilsley (3 miles east) and Stanmore (3 miles south-east). Further afield, our area takes in Newbury (10 miles south), Thatcham (10 miles south-east), Speenhamland (9 miles south), Hungerford (10 miles south-west), Little Heath (15 miles east) and Calcot (15 miles south-east).
Near you in Farnborough
Nearby you’ll also find Atlas Computer Laboratory (3.8 miles north-east). The countryside around Farnborough includes Chain Hill and Letcombe Valley.
When to call us in Farnborough
New sealant run over old sealant rarely holds. Fresh silicone won’t stick to cured silicone.
It’s worth sending us details if you spot any of the following:
- Gaps between rainscreen or cladding panels
- Previous reseals run over old sealant
- Failed seals around shopfront and entrance frames
- Cold air coming in at window perimeters
For contractors building in or near Farnborough, we seal to the drawings, the specification and the programme.
Comparing quotes
- How the existing material will be dealt with
- Can the work be phased to keep areas open?
- Will CSCS-carded applicators be on site?
- How the joint faces will be prepared and primed
Nearby places to Farnborough
What else we do in Farnborough
Quoting for work in Farnborough
Each job is priced on its own details. The things that drive the figure:
- Joint width, depth and condition
- Any access equipment needed
- Whether the work must be split into stages
- Distance, for remote addresses
Pricing facade joints depends on how many there are, their condition and the access, plus any specification you are working to. Ask us for a fixed quote.
Sending details for a quote
Good information means a firmer quote. Helpful details to send:
- Photos of the joints, close up and from further back
- The site address and postcode
- The product your specification calls for
- The asbestos register, for older buildings
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.
Common questions from Farnborough clients
What site paperwork comes with a job in Farnborough?
RAMS, insurance certificate, CSCS details: list what the site needs and we will confirm it with the quote. We’re CHAS accredited and a Constructionline member, with £5m public liability insurance and CSCS-carded applicators.
Can the mastic package for our job in Farnborough follow the site programme?
Yes. Send the programme and drawings, and we will plan the mastic to suit the stages. We are CHAS accredited and a Constructionline member, and paperwork such as RAMS is confirmed with the quote.
Are your applicators CSCS-carded?
Yes. Should the site need card details in advance, tell us and we’ll confirm them with the quote.
Do you take on small jobs?
Small jobs are welcome alongside larger packages. Send details for a fixed quote.
Will you check whether the sealant is causing the leak?
Yes. Photos are often enough to start, followed by a visit if needed. Many frame leaks are sealant failures, though not all, and we will tell you which.
Is old mastic on our building likely to contain asbestos?
In older non-domestic buildings, old sealant can contain asbestos. Check the asbestos register or survey before it is disturbed, and if anything is suspected, we stop until it’s tested. Removal of asbestos isn’t something we do.
Can you work to our specification?
Yes. Send it with your enquiry, and we’ll price the work to it, flagging anything that needs clarifying.
Site staff or a sealant specialist?
A short, simple internal joint is often within reach of a maintenance team. Where it goes wrong is preparation: sealing over old material, sealing onto damp or dusty surfaces, or a product that can’t take the movement.
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 the job involves on each surface
Render and coated surfaces
Where the joint will be painted over, a paintable hybrid or PU sealant may suit. The choice depends on the specification and finish.
Coping and flashing joints
Sometimes the coping or flashing itself has failed. We tell you if the fix is a roofing or metalwork job rather than a reseal.
On site: what to expect
We schedule the visit to fit the site hours and access windows you give us. While we are working, the area stays contained and tidy, and your contact hears from us before we move to the next area. For work around Farnborough, we aim to finish in one visit, so we ask for photos and rough sizes first. Then the right materials arrive with us.
- First we review photos, drawings or what we saw on a visit, and agree how each joint will be reached.
- Failed sealant is cut out along its full length.
- Both faces are cleaned and, where the product needs it, primed.
- Backing rod, or bond-breaker tape in shallow joints, limits the depth.
- A facade-grade sealant rated for the movement goes in, tooled to a concave profile.
- The completed runs are checked with you, then the 12-month guarantee applies.
Getting the site ready
- Tell us which areas need to stay in use
- Clear stock, furniture or equipment away from the joints
- Let us know about inductions and permits
Get a fixed quote
A handful of photos and a postcode is the fastest way to a quote. Send them through the quote form, or call the office on 01277 525 020 or email us if you’d rather talk the job through.