Hampshire · England
Window Mastic in Lower Upham
Mastic around window and door frames, sills and patio doors for Lower Upham, backed by a 12-month guarantee. Call for a quick quote.
- Gaps where the sill meets the wall
- Sealant in the wrong colour for the frame
- Old mastic that has gone black or come away
Landlord and commercial work in Lower Upham
Letting agents often deal with us directly. Tell us the address, the job and how access works and we’ll give you a quote.
A neglected joint can let water reach the structure, which matters even more when someone else lives there. Keeping joints in good order is simple maintenance that we can handle for you.
How we handle window mastic in Lower Upham
Homes in Lower Upham have every kind of window: uPVC, aluminium, timber and composite, plus patio doors, French doors and sills. The sealant is chosen to suit the frame material and the wall. We are often asked to deal with cracked or shrunken mastic around the frame and whistling draughts around closed windows, on patio & French doors, composite doors and window sills.
In a village or hamlet like Lower Upham, 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.
Big or small, you get the same 12-month guarantee in Lower Upham and across Hampshire.
- Place
- Lower Upham (SO32)
- Wider area
- Hampshire
- Cover
- 12 months on all our work
- Quotes
- A clear quote up front
- Call
- 0345 464 0079
- Page updated
- 26 October 2026
Towns and villages near Lower Upham
More services for Lower Upham
Surface by surface
Timber windows & doors
Soft or rotten wood can’t be sealed successfully. We’ll point out any rot we find, as a joiner will need to deal with it.
Aluminium frames
Aluminium moves with heat, and the frames are often slimmer than uPVC. A tidy bead in anthracite grey, black or a matching colour suits the frame.
What window mastic looks like in Lower Upham
The South East is one of the drier parts of the UK, yet outdoor joints still have to be sealed dry, so jobs are booked with the weather in mind.
If you live in an older home near Church of St Mary, the joint between an old wall and a newer frame is generally the first place rain gets in. Schools such as Upham Church of England Aided Primary School are buildings too, and the mastic around its windows and doors needs looking after like any other building’s.
Lower Upham is about 4 miles east of Eastleigh, in Hampshire. If you need window mastic in Lower Upham, please phone 0345 464 0079 or email us for a quick quote. We’re based in Crawley and cover Hampshire, Lower Upham included. Our Hampshire coverage runs to 683 places, Lower Upham among them. We also work in Southampton, about 7 miles from Lower Upham.
All of SO32 is within our area for window mastic, from the main roads to the quietest streets. You’ll find streets such as Upham Street, Winchester Road and Portsmouth Road. Nearby, we also carry out window mastic in Wintershill (1 mile south), Upham (1 mile north-east), Durley Street (1 mile south), Ashton (1 mile east) and Fair Oak (2 miles west). Within a short drive, we also cover Winchester (6 miles north-west), Gosport (13 miles south), Havant (14 miles south-east), Eastleigh (4 miles west), Fareham (9 miles south) and Horndean (11 miles south-east).
Landmarks near Lower Upham
Locally, jobs take us to homes and businesses close to Wyvern Technology College. Lower Upham’s nearest station is Hedge End station, about 3.4 miles south-west. A little further out are Bishop's Waltham Museum (2.2 miles south-east) and Moorgreen Hospital (4.4 miles south-west). For a walk, there’s Bishops Waltham Branch LNR and Twyford Down.
Quotes for window mastic in Lower Upham
For a quick quote, just ask. What matters most is:
- Any mould that needs treating
- How much there is to do
- Whether old sealant or filler has to be cut out
- Which sealant suits the joint
Homes and businesses are quoted the same way: the amount of work, how we reach it and what it needs. Ask us for a quote and we will explain what it covers.
What to tell us for a quote
What to tell us when you ask for a quote:
- Whether it’s a home or a business
- The address or postcode of the job
- How many joints, rooms or windows are involved
- Whether it has been sealed before
A good description makes for an accurate quote. Let us know the location, the problem and roughly how many joints.
Your questions about window mastic in Lower Upham
Is Lower Upham in your area for window mastic?
Yes. Our work covers London and the South East, and Lower Upham is part of that. Just call 0345 464 0079 or send us an email with a few details of the job, and we’ll give you a clear quote.
I let a flat near Hedge End station. Can you help?
Yes, we work for landlords and agents. You can ring 0345 464 0079 or email us with the address and a few details, and we’ll give you a fixed price before we start.
Should I try DIY first?
It depends on the job. High-level, external movement and fire-rated joints are professional jobs.
Do you have sealant for grey or black windows?
Yes. We can use white, brown, anthracite grey, black or clear, so the joint suits the frame.
Can I paint over the new sealant?
It depends on the sealant. Some hybrid sealants can be painted; silicone can’t. Tell us if you’re decorating and we’ll choose accordingly.
Do you take out the old sealant first?
Yes, every time. New sealant will not bond properly to old, so any old material comes out before anything new goes in.
Do you hold any approvals?
Yes. We are approved under the ARBOMaster scheme, the approved applicator scheme for Arbo sealants.
What sealant do you use?
Each joint gets the product that suits it. Where it moves, gets wet or faces the weather makes a difference, and we’ll tell you what we’re using.
How the visit works
We work through the job in order: protect, prepare, seal, tidy. Typically it takes a morning for a couple of windows and a door. For a village or hamlet like Lower Upham, 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.
- We remove the old mastic and clean the frame edge and wall.
- 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.
- We tool each bead neatly and check every joint is closed.
Getting ready for the visit
- Mention any parking rules near the property
- Mention any tricky access
- Where the joints are inside, avoid wetting them before we arrive
Ask for a quote
To get a quote, phone 0345 464 0079 or drop us an email with the location and a short description of the problem. We will give you a clear quote before any work starts.
Related advice
Why act early in Lower Upham
Not every sealant suits a window. Interior caulk and bathroom silicone are not made for exterior frame joints. An exterior, low-modulus sealant stays flexible in sun and frost. Older cottages and farmhouses around Lower Upham can have timber floors and frames, where water from a failed joint can cause rot if it’s left.
What you pay reflects the work, not a rough estimate. That is why we ask a few questions first.
Why choose Mr Mastic in Lower Upham
- A sealant colour to suit the surroundings
- We agree the colour with you first
- Experience in homes, commercial sites and hotels
- ARBOMaster approved applicator
See our cost guide or customer reviews.
Common problems we fix in Lower Upham
Some failures date back to when the windows were fitted. Mastic laid onto dusty, damp or crumbling surfaces didn’t grip properly, so it comes away long before its time.
Any of these means the joints need attention:
- Gaps between the frame and the inside reveal
- Mastic that is falling out in pieces
- Cracked sealant at the sill ends
- Damp patches on the reveal after heavy rain
Letting a property close to Hedge End station? Then sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
What to look for in a quote
- What the cure time is
- Are they insured?
- Whether all the old sealant comes out first
- Which sealant they’ll use, and why
Should I try it myself first?
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
If you do try it yourself, take your time over the 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.