West Berkshire · England
Window & door mastic in Swallowfield, West Berkshire
Mastic around window and door frames, sills and patio doors for homes and businesses in Swallowfield and across West Berkshire. Fully insured, ARBOMaster approved and guaranteed for a year.
- Rain getting in at the frame or under the sill
- Cold air getting in at the frame edge
- Cracked or shrunken mastic around the frame
What sealant work cannot fix
Honest advice matters more to us than a booking, so here’s what new sealant won’t do:
- A frame that has rotted at the joint
- Damp problems in the wall away from the window
- A failed sealed unit that has misted up
If you’re not sure, just call 0345 464 0079 or drop us an email and we will give you a straight answer.
Joints and surfaces we work on
- Patio & French doors
- Timber windows & doors
- Aluminium frames
- Composite doors
- Window sills
- uPVC windows
How we handle window mastic in Swallowfield
Some gaps around frames are far deeper than they look. Packing it solid with sealant gives a joint that cannot flex, so we fit backing rod to set the right depth. The sealant then grips the two sides it should. Typical jobs include draughty joints inside around the window and mastic that has split away from the wall, across timber windows & doors, uPVC windows and patio & French doors.
Mastic can only go onto a dry, clean joint, so window work in Swallowfield is booked around the forecast. Tell us about access to every side of the house, including upper-floor windows.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Location
- Swallowfield (RG7)
- Wider area
- West Berkshire
- Guarantee
- A year, on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
What we do, step by step
When we arrive, we start by going over the job with you. Surfaces next to the work are protected before work begins. Most jobs take a few hours for a handful of frames, longer for a whole house. In a small place like Swallowfield, access is usually the main thing to plan. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- We check how each frame can be reached safely.
- All the failed sealant is cut away, along with any loose debris.
- The surfaces are cleaned and left dry, and primed where the sealant calls for it.
- Backing rod fills deep voids and the sealant goes in on top.
- We tool the joint so water runs off, then clear up.
Getting ready for the visit
- Tell us if parking is tricky
- Mention if the joints have been sealed before
- Mention any sign-in or site rules at work premises
Get a quote
If you’re in Swallowfield and need window mastic, call 0345 464 0079 or send us an email. A short description of the job and where it is helps us quote, and you will get a clear quote before work begins.
Read more
How we quote for window mastic
Every job gets its own quote. This is what makes a difference:
- The type of sealant required
- Whether there’s mould to deal with
- When we can work, for business premises
- How much old sealant there is and how hard it is to remove
Every job is a little different, so each one gets its own quote. Size, access and the product the joint needs all play a part, and we will explain the quote if you ask.
What we need to know
Photos help, but a description is a good start. Try to tell us:
- Where the job is, and your postcode
- The problem you’ve noticed
- Any previous sealing or DIY work
- How we’d reach the joints
Asking for a quote is easy: let us know the job and the location, and roughly how big it is. Photos by email help us understand the job.
Towns and villages near Swallowfield
Other services in Swallowfield
Why it’s worth doing now in Swallowfield
Choosing the product is half the job. Interior caulk and bathroom silicone aren’t made for exterior frame joints. A low-modulus exterior sealant keeps its stretch through hot and cold weather. In a small place like Swallowfield, homes can be exposed to wind and rain, which finds any gap, and damp in older walls is slow to dry out.
Combining jobs into one visit is usually more efficient than separate visits, so it’s worth mentioning everything you’d like done. We’ll send you a clear quote for the lot.
Why us?
- ARBOMaster approved applicator
- Over 20 years’ experience
- 180+ five-star Google reviews
- Every job guaranteed for a year
Read how sealant jobs are priced and customer reviews.
Frames and glazing around Swallowfield
With historic houses such as Stratfield Saye House (about 2.6 miles south-west) nearby, there’s older building stock in the area around Swallowfield as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window. Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
Managing a site like Lambs Lane Primary School? Then the mastic around its windows and doors needs looking after like any other building’s. Letting a property close to Mortimer station? Then sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Swallowfield is about 5 miles south of Reading, in West Berkshire. Swallowfield gets the same service as everywhere we cover: old sealant removed completely, careful preparation and a one-year guarantee. 155 places in West Berkshire are on our list.
Postcode districts we cover here for window mastic: RG7. Streets in the area include The Street, Hornbeams and Fieldfare Court, all of which we cover. We also cover the places around Swallowfield: Riseley (1 mile south), Spencers Wood (1 mile north), Beech Hill (2 miles west), Farley Hill (2 miles east) and Grazeley (2 miles north-west). Within a short drive, we also cover Thatcham (13 miles west), Burghfield Common (5 miles west), Calcot (6 miles north-west), Shaw (15 miles west), Burghfield Hill (4 miles west) and Theale (6 miles north-west).
Landmarks near Swallowfield
In Swallowfield, that means homes and buildings near Oakbank, Swallowfield Meadow and The Crown pub and the streets around them. For rail, the closest station is Mortimer station, about 3.3 miles west of the centre. A little further out are Beaumys Castle (0.9 miles west) and Royal Berkshire Hospital (5 miles north). Open spaces near Swallowfield include The Marshes Local Nature Reserve and Longwater.
Can I do it myself?
If you’ve already had a go yourself, that is fine. We cut it out and start again, so just mention it when you contact us.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is matched to the joint and its conditions, then guaranteed for a year.
Do you need window mastic in Swallowfield?
Mastic ages in the weather. UV light hardens the outside of the bead, and over the years it loses its give, cracks and comes away.
Common reasons people contact us include:
- Whistling draughts around closed windows
- Damp patches on the reveal after heavy rain
- Black, perished sealant on frames
- A bead that does not match the frame
For an older house near a landmark such as Church of All Saints, the joint between an old wall and a newer frame is usually the first place rain gets in.
Questions to ask before you book
- Whether all the old sealant comes out first
- How long to leave it before use
- What product goes in the joint
- What happens if the job turns out different
Your questions about window mastic in Swallowfield
I let a flat near Mortimer station. Can you help?
Yes, rental work is part of what we do. You can ring 0345 464 0079 or send us an email with the address and a few details, and we will give you a fixed price before work begins.
Do you cover Swallowfield for window mastic?
Yes. Our work covers London and the South East, and Swallowfield is part of that. You can ring 0345 464 0079 or email us and let us know what needs doing, and we’ll give you a clear quote.
Where is Mr Mastic based?
We’re based in Crawley, and we cover South East England, London and all of Scotland.
Do you have sealant for grey or black windows?
Yes, we choose a colour to suit the frame. Grey and black frames get grey or black sealant, and wood-effect frames normally suit brown.
Can I add another job to the visit?
Yes. Several rooms, windows or areas can go on one quote.
Can you seal over the old sealant?
No, and we never do. It may look fine at first, but the new bead soon lifts. Removing the old sealant completely is the only lasting way.
What should I tell you?
The location, the problem and the rough size of the job. Photos by email help too.
Do you hold any approvals?
Yes. We are ARBOMaster approved, the scheme for applicators of Arbo sealants.
Looking after it afterwards
So the new joints stay in good condition:
- Keep drainage slots and sill grooves clear
- Ventilate rooms so frames don’t stay wet inside
- Check the mastic once a year
- Don’t use solvent cleaners on the joint
Check the drainage slots in the frames are not blocked, so water can run away instead of sitting against the joint.
A failed joint lets water into the wall a little at a time. You might not see it until plaster blows or a damp patch appears inside. Early resealing stops it reaching that point.