Hampshire · England
Window Mastic in Middle Wallop
Window mastic for Middle Wallop, by sealant specialists with 20+ years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Old mastic that has gone black or come away
- Sealant in the wrong colour for the frame
- Damp patches on the reveal after heavy rain
Looking after it afterwards
Good habits help new joints last longer. Our tips:
- Avoid harsh chemicals near the mastic
- Make sure the drainage slots are not blocked
- Keep paint off silicone joints
- Wash the frames with mild soapy water
On timber frames, keep the paintwork in good order, since wood that gets wet swells and shrinks more. Keep paint off the silicone itself.
Signs to watch for: cracks in the mastic, gaps you can see light through, damp on the reveal or mould around the inside of the frame. Any of these is worth a call.
Window mastic in Middle Wallop, done properly
Frames and walls don’t move together. Heat and cold make frames grow and shrink against brick or render that hardly moves. So the sealant has to stretch and recover, which is why we use a low-modulus product. If you’re dealing with leaking joints at the ends of sills and cold air getting in at the frame edge, we can put it right, whatever the surface.
In a village or hamlet like Middle Wallop, older cottages and farmhouses often have timber windows set in stone or brick. Older buildings like these don’t always suit modern silicone, so the sealant has to be chosen to suit the building.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we will put it right.
- Where
- Middle Wallop (SO20)
- Wider area
- Hampshire
- Guarantee
- 12 months on all our work
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Updated
- 26 October 2026
Places near Middle Wallop
More services for Middle Wallop
Do you need window mastic in Middle Wallop?
Joints that are too thin or too deep fail early. A skim of sealant over a wide gap soon tears, and a gap filled solid can’t flex. Backing rod sets the right depth.
Signs it’s time to call us include:
- Sealant in the wrong colour for the frame
- Gaps between the frame and the inside reveal
- Rushed sealant from a window installation
- Cold air getting in at the frame edge
Rented homes near Grateley station change hands often, and cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Comparing quotes
- How long to leave it before use
- Are they insured?
- How long the guarantee is
- Who turns up on the day
Window mastic in Middle Wallop: local notes
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.
Homes close to Church of St Andrew include some older properties, and frames set in older brick or stone need a sealant that suits the wall as well as the frame. Managing a site like Wallop Primary School? Then larger buildings have plenty of frames, and the mastic around each one ages.
Middle Wallop is about 7 miles south-west of Andover, in Hampshire. Wherever you are in the SO20 postcode area, we can carry out window mastic at your property. Our Hampshire coverage runs to 683 places, Middle Wallop among them. Southampton is on our list too, about 17 miles from Middle Wallop.
Every address in SO20 is covered for window mastic. Streets in the area include Station Road, Knockwood Lane and Farley Street, and we cover them all. Other places close to Middle Wallop include Nether Wallop (1 mile south-east), Over Wallop (1 mile north-west), Kentsboro (2 miles north-east), Fox (4 miles north) and Red Rice (4 miles north-east). Larger places within reach include Winchester (13 miles south-east), Eastleigh (15 miles south-east), Andover (7 miles north-east), Totton (15 miles south), Chandler's Ford (13 miles south-east) and Romsey (11 miles south-east).
Around Middle Wallop
Around Middle Wallop, our work takes us to homes and buildings near The George Inn, among other places. The nearest railway station is Grateley station, roughly 3 miles north-west of the centre. Not far away are Quarley Hill.
Can I do it myself?
If you’ve already had a go yourself, that’s fine. We remove it and do the joint properly.
Too much sealant is as bad as too little. A heavy bead looks messy and copes badly with movement, and getting the depth right matters as much as the look.
Common questions in Middle Wallop
Will you come out to Middle Wallop?
Yes. Middle Wallop is within the area we cover, which takes in towns, villages and rural addresses. We work across London and the South East. Just mention lanes, gates or anything else about the route when you book.
I let a flat near Grateley station. Can you help?
Yes. We work for landlords and letting agents as well as householders. You can ring 0345 464 0079 or drop us an email with the details for a clear quote.
Do you hold any approvals?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
Can you seal the gap between the frame and the plaster indoors?
Yes. Outside is the weather seal; inside closes the gap to the plaster. We can do either or both.
Do you have sealant for grey or black windows?
Normally, yes. Tell us the frame colour when you get in touch and we will match it as closely as we can.
Is it OK to seal over old sealant?
No. We remove every bit of old sealant first, so the new joint bonds to clean surfaces.
When is the sealant fully cured?
Cure times vary by product and the temperature. We tell you how long to leave it before we go.
Where is Mr Mastic based?
We work from Crawley. Our applicators cover Middle Wallop.
How we quote for window mastic
The quote reflects the job in front of us. We look at:
- How many rooms, windows or areas are involved
- Whether the work is at height
- Which sealant suits the joint
- Any mould that needs treating
Leaving a failed joint usually makes the job bigger, not smaller. If you’re not sure whether it needs doing, phone 0345 464 0079 or drop us an email for an honest opinion and a quote.
Asking for a quote
When you call or email, it’s useful to know:
- Roughly how big the job is
- The address or postcode of the job
- Photos by email, if that is easy
- Whether it’s a home or a business
We quote each job on its own, so the first step is telling us about yours. Simply call 0345 464 0079 or email us and describe the job, and pictures are welcome.
How it works
On the day, we start by going over the job with you, so you know exactly what we are doing. Surfaces next to the work are protected before any work begins. The work generally takes a few hours for a handful of frames, longer for a whole house. Somewhere as small as Middle Wallop, access is often the only tricky part. If the job is outside, mention outbuildings, exposed walls and how to reach them.
- First we look at every frame and agree the list.
- We remove the old mastic and clean the frame and the wall.
- Deep gaps are filled with backing rod to set the depth.
- We apply a weatherproof sealant to match the frame and tool it neatly.
- We clear up and check every joint is fully closed.
Preparing for the visit
- Clear items away from the joints we’re working on
- Mention any leaks or damp you’ve noticed
- Mention any parking rules near the property
Getting a quote
For window mastic in Middle Wallop, ring 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 any work starts.
Related advice
When something else is needed
In fairness, there are a few things sealant won’t fix:
- A frame that has rotted at the joint
- Worn gaskets, brush seals or a door that has dropped
- Condensation trapped between the panes
If you’re not sure, just ring 0345 464 0079 or email us and we’ll give you a straight answer before booking.
Joints and surfaces we work on
- Timber windows & doors
- Aluminium frames
- Window sills
- uPVC windows
- Patio & French doors
- Composite doors
Leave it or put it right?
Once mastic fails, rain can get between the frame and the wall. Left long enough, it can stain inside walls, spoil plaster and rot wooden frames. A reseal is a much smaller job. Around Middle Wallop, older homes often have timber in their floors and frames, where water from a failed joint can cause rot if it’s left.
The cost depends on the size of the job, how much old material has to come out and how easy the joints are to reach. You’ll have a clear quote before any work starts.
Why us?
- You choose the colour before work begins
- Any old sealant cut out fully, not covered over
- Fully insured
- 20+ years of sealant experience
Read what affects the cost or what customers say.