Oxfordshire · England
Sand mastic for sash & case windows in Fawley, Oxfordshire
Sand mastic across Fawley and nearby, with every bit of old sealant taken out first.
- Gaps where the frame meets the masonry
- Window mastic to renew ahead of painting
- Silicone on a period window that looks wrong
For landlords and businesses
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. We can quote for more than one property at once.
For anyone letting property in or around Fawley, several properties can go on one quote. Send us the addresses and the work at each.
Sand mastic for homes and businesses in Fawley
We work across Fawley renewing sand mastic on sash windows and doors. Each joint is raked out, prepared and pointed by hand, finished to suit the masonry. If you’re dealing with tired mastic found when preparing windows for paint and cracked mastic round a front door frame, we can put it right, on period & listed homes, tenement windows and sash and case windows alike.
Outdoor sealant needs dry, clean surfaces, so work on frames around Fawley is planned for dry weather. Let us know about access to all the frames, upstairs ones included.
There’s a 12-month guarantee on every job, whatever its size.
- Where
- Fawley (RG9)
- Wider area
- Oxfordshire
- Guarantee
- 12 months on all our work
- Quote
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Questions from Fawley
Do you cover smaller places like Fawley?
Yes, we do. We work across London and the South East, and smaller places are part of that. The journey is planned ahead, so it helps to know about access.
Can you help a landlord with a rental near Henley-On-Thames station?
Yes, rental work is part of what we do. You can call 0345 464 0079 or drop us an email with the address and a few details, and we’ll give you a fixed price before work begins.
Is sand mastic better than silicone for my windows?
Sand mastic generally suits period timber windows best. On modern frames, we’d normally use a flexible sealant.
Is it worth trying it myself?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. We can always put it right if it fails.
Is it messy?
Not at all. The area is protected while we work and cleaned up afterwards.
Do I have to be there?
For indoor joints, yes, someone needs to let us in. After that, you can carry on with your day.
What do you put in the joint?
We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference, and we’ll explain our choice.
Can you replace silicone on a period window with sand mastic?
Often, yes. Once the silicone is out and the joint prepared we point it with sand mastic.
Should I try it myself first?
If you’re set on DIY, put the effort into preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it does not work out, we can still put it right.
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions.
When something else is needed
We will always be straight with you, so here’s what new sealant will not do:
- Damaged stone surrounds
- Sashes that rattle, stick or won’t open
- Planning or listed building consent (your local planning authority decides)
If in doubt, ring 0345 464 0079 or drop us an email and we will say what we think before you book.
Where we work in Fawley
- Period & listed homes
- Tenement windows
- Timber door frames
- Brick reveals
- Sash and case windows
- Stone surrounds
Aftercare tips
How long the joints last depends on use and care. Here’s what we suggest:
- Make sure water runs off the sill
- Ask a joiner to look at soft timber first
- Inspect the joints round the windows every year or so
- Do not paint over the new mastic
When preparing windows for paint, take care around the mastic. It can be damaged by heavy scraping.
Renewing mastic before redecorating saves doing it twice. Paint over cracked mastic only covers it up.
Towns and villages near Fawley
Also in Fawley
How the job changes by surface
Tenement and terrace windows
Tenements and terraces often have many sash windows with ageing mastic. We work on single windows or whole elevations.
Timber door frames
Doors face weather and wear, so their mastic can fail sooner. We rake it out and renew it.
What we’re called out for in Fawley
Age is the main cause. Even well-laid mastic needs renewing in time and how long it lasts depends on the weather it faces.
Common reasons people contact us are:
- Gaps round a timber door in stone or brick
- Failed mastic on an exposed elevation
- Modern sealant on a period surround
- Draughty sash windows at the surround
For landlords with property near Henley-On-Thames station, any sash windows need sound mastic to keep draughts and rain out.
Before booking anyone
- Who does the work, and how experienced they are
- Which colour the sealant will be
- How the surfaces are prepared before sealing
- Are they insured?
The process
On the day, there’s very little for you to do. Show us the job and we’ll take it from there. The job generally takes a few hours for a single window, longer for several from start to finish. Somewhere as small as Fawley, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We check each window surround and the condition of the joint.
- The joint is raked out and cleaned.
- Large voids are packed out.
- New sand mastic is applied and shaped by hand.
- We finish the mastic to a tidy line.
How to prepare
- Let us know about parking restrictions
- Mention any leaks or damp you’ve noticed
- Mention any sign-in or site rules at work premises
How to get a quote
Call for a quick quote, or email us if that’s easier. Describe what needs sealing and we’ll talk you through the work and give you a clear quote.
Advice
Windows and doors in Fawley
With historic houses such as Greenlands (about 1.2 miles south-east) nearby, there’s older building stock in the area around Fawley as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window. Compared with the north and west, the South East gets less rain, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
In the older streets around St Mary the Virgin's Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Fawley is about 6 miles west of Marlow, in Oxfordshire. Homes, rented property, offices and hotels in Fawley is covered for sand mastic, old or new, large or small. Every job comes with our one-year guarantee. 443 places in Oxfordshire are on our list, from the larger towns to small villages. We also work in Reading, around 9 miles away.
All of RG9 is within our area for sand mastic, from the main roads to the quietest streets. If you’re just outside Fawley, we cover Fawley Bottom (1 mile west), Middle Assendon (1 mile west), Lower Assendon (1 mile south-west), Bix (2 miles west) and Henley-on-Thames (3 miles south). Further out, we also cover Didcot (15 miles west), Thame (12 miles north), Benson (9 miles west), Chinnor (9 miles north), Tilehurst (10 miles south-west) and Wallingford (10 miles west).
Landmarks near Fawley
We work in homes and buildings around Fawley Court and Temple Island and The Walnut Tree pub. The closest station to Fawley is Henley-On-Thames station, roughly 2.7 miles south. Nearby you will also find Marlow Community Hospital (5.8 miles east) and Frazer Nash Archives (3.1 miles south). The countryside around Fawley includes Warburg Nature Reserve.