West Berkshire · England
Window Mastic in Upper Lambourn
Mastic around window and door frames, sills and patio doors in Upper Lambourn, with a 12-month guarantee on every job. Ask us for a quote.
- Sealant in the wrong colour for the frame
- Hard, cracked sealant around windows
- Mastic that is falling out in pieces
Window mastic in Upper Lambourn
Around Upper Lambourn we seal all kinds of frames: uPVC, aluminium, timber and composite, along with patio doors, French doors and sills. Each gets a sealant chosen for the frame and the wall it meets. Common call-outs are for gaps between the frame and the inside reveal and hard, cracked sealant around windows, on uPVC windows, timber windows & doors and composite doors.
Somewhere as small as Upper Lambourn, older homes often have timber frames set in stone or brickwork. Older buildings like these do not always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
The work is guaranteed for twelve months. If something is not right with it in that time, tell us and we’ll put it right.
- Where
- Upper Lambourn (RG17)
- Wider area
- West Berkshire
- Guarantee
- 12 months on all our work
- Quote
- A clear price before we start
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Different surfaces, different methods
Aluminium frames
Aluminium moves with heat, and the frames are often slimmer than uPVC. A neat, narrow bead in a colour to match keeps the clean look.
Timber windows & doors
On period timber windows, traditional sand mastic is sometimes the better choice. We can talk through the options.
Landlords, agents and businesses in Upper Lambourn
If you manage several properties in or around Upper Lambourn, several properties can go on one quote. Just tell us the addresses and what each one needs.
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
How the visit works
Most of a good job is in the preparation, and we do not rush it. Every joint is cleaned and dried before new material goes in. All told, the work takes anything from an hour or two to a full day, depending on how many frames there are. For a village or hamlet like Upper Lambourn, the journey is planned in advance: tell us about narrow lanes, gates, long drives and where we can park. Everything for the job comes with us, so a second trip is avoided where possible.
- Each frame is looked over and we agree which ones need resealing.
- The old mastic is cut out and scraped back to clean surfaces.
- Deep gaps get closed-cell backing rod to set the depth.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- Every joint is tooled smooth and checked before we leave.
Getting ready for the visit
- Mention any sign-in or site rules at work premises
- Let us know about earlier repairs to the joints
- Mention any parking rules near the property
Get a quote
To get a quote, ring 0345 464 0079 or email us and tell us where the job is and what the problem looks like. We’ll send you a clear quote before any work starts.
Advice
Keeping the joints in good condition
Good habits help new joints last longer. A few tips:
- Make sure the drainage slots aren’t blocked
- Keep paint and stain on wooden frames in good order
- Clean frames with a soft cloth and soapy water
- Check the mastic once a year
Check the drainage slots in the frames aren’t blocked, so rain drains out rather than building up at the sealant.
Wet, windy weather is when failed mastic shows itself, but sealant goes on best when frames and walls are dry. Dealing with it when you first notice a crack avoids chasing leaks through the wet months.
What sealant work can’t fix
Some problems need a builder, plumber or other trade rather than us:
- Condensation trapped between the panes
- Worn gaskets, brush seals or a door that has dropped
- Soft or decayed wood in the frame
Not sure which it is? You can call 0345 464 0079 or email us and we’ll tell you honestly before booking.
Joints and surfaces we work on
- Patio & French doors
- Timber windows & doors
- Window sills
- Composite doors
- Aluminium frames
- uPVC windows
Nearby places to Upper Lambourn
More services for Upper Lambourn
How we quote for window mastic
You will get a clear quote before work begins. It takes into account:
- Any mould that needs treating
- Any working-time requirements on site
- The size of the job
- Access and height
The cost reflects the work involved, not a rough estimate. That’s why we ask about the job first.
What we need to know
You don’t need to know the technical terms. Just tell us:
- A few pictures by email, if you can
- Any access issues, like height or stairs
- The address or postcode of the job
- If someone has resealed it before
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. A few pictures by email make the job easier to understand.
Can I do it myself?
Some jobs are best left to a professional: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
FAQs for Upper Lambourn
Is Upper Lambourn in your area for window mastic?
Yes, Upper Lambourn is within the area we cover. We work across London and the South East. Just phone 0345 464 0079 or send us an email with a few details of the job, and we’ll send you a clear quote.
Do you cover smaller places like Upper Lambourn?
Yes, Upper Lambourn is covered. We work across London and the South East, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Are you ARBOMaster approved?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
Do you remove the old sealant?
Yes. All of the old material is cut out and the joint cleaned.
How do I get a quote for window mastic in Upper Lambourn?
Every job is different, so each one gets its own quote. For a quick quote, call 0345 464 0079 or send us an email and tell us what needs doing and where.
Do you work on first-floor windows?
Yes, if safe access is possible. Higher or awkward frames may need extra access, and we’ll confirm what’s needed.
Is there any odour?
It depends on the product. Some products have a noticeable smell, others very little.
What sealant do you use?
It depends on the joint: anti-fungal sanitary silicone in wet areas, and other sealants where joints move or face the weather. Brands we use include Arbo and Everbuild.
Upper Lambourn homes and the weather
Historic houses like Ashdown House (about 2.1 miles west) are a reminder that the area around Upper Lambourn has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
Ashdown House, about 2.1 miles west, is one of the historic houses in the wider area around Upper Lambourn. Around Upper Lambourn, as everywhere, window mastic is only as good as the preparation behind it.
Upper Lambourn is about 7 miles south-west of Wantage, in West Berkshire. For window mastic in and around Upper Lambourn, it’s easy to get a quote: please ring 0345 464 0079 or send us an email. We cover West Berkshire from our Crawley base. Across West Berkshire, we cover 155 places, and Upper Lambourn is one of them. For nearby work, see our Oxford page.
All of RG17 is within our area for window mastic. If you need window mastic at a property on High Street and Maddle Road or a nearby road, we can help. We also cover the places around Upper Lambourn: Lambourn (1 mile south-east), Sheepdrove (2 miles east), Woolstone (5 miles north), Kingston Lisle (5 miles north) and Westcot (5 miles north). Further out, we also cover Newbury (13 miles south-east), Thatcham (15 miles south-east), Speenhamland (13 miles south-east), Hungerford (8 miles south), Shaw (13 miles south-east) and Wash Common (14 miles south-east).
Local landmarks in Upper Lambourn
Around Upper Lambourn, our work takes us to homes and buildings near The Malt Shovel pub, among other places. For a walk, there’s Seven Barrows and Rams Hill.