Hampshire · England
Window & door mastic in Upper Common, Hampshire
Mastic around window and door frames, sills and patio doors for homes and businesses in Upper Common and across Hampshire. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Cold air getting in at the frame edge
- Old mastic that has gone black or come away
- Cracked or shrunken mastic around the frame
Landlords, agents and businesses in Upper Common
We also work for businesses, from offices to washrooms and kitchens. On commercial sites, working times can be discussed when we quote.
Water getting past a failed joint can damage the building, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance.
Window mastic in Upper Common, done properly
If you can feel air around a shut window, the gap is often at the frame. Resealing that joint can make a room feel noticeably less draughty. If the draught is through the window seals instead, we will tell you. If you have draughts coming in around windows and doors and a bead that doesn’t match the frame, we can help, on patio & French doors, timber windows & doors and aluminium frames alike.
Somewhere as small as Upper Common, older homes often have timber frames set in stone or brickwork. Older buildings like these don’t always suit modern silicone, and sometimes a traditional sand mastic is the better choice.
We guarantee the work for a year. If something isn’t right with it in that time, tell us and we’ll put it right.
- Location
- Upper Common (RG25)
- Wider area
- Hampshire
- Guarantee
- A year, on every job
- Quotes
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Looking after it afterwards
Looking after new joints is easy:
- Air rooms to keep condensation down around windows
- Keep solvents and bleach off the sealant
- Clear any debris from frame drain holes
- Walk round the house once a year and look at the joints
Silicone cannot normally be painted, so if you’re planning to paint the frames or walls, tell us beforehand. We can use a paintable sealant where that matters.
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.
Quotes for window mastic in Upper Common
Some jobs are bigger than they look, and some smaller. The main factors:
- How much there is to do
- Whether the work is at height
- When we can work, for business premises
- The number of rooms or windows
Some things make a job bigger or smaller: the old material and how easily it comes out, whether mould needs treating, and whether we need extra access for height. Your quote takes all of that into account.
Helping us quote
What to tell us when you ask for a quote:
- How many joints, rooms or windows are involved
- Access, such as stairs, a lift or height
- Pictures of the joints, sent by email
- If it’s domestic, commercial or a hotel
For a quote, phone 0345 464 0079 or send us an email and tell us where the job is and what the problem looks like. We will give you a clear quote before any work starts.
What sealant work can’t fix
Some problems need a builder, plumber or other trade rather than us:
- A frame that has rotted at the joint
- Condensation trapped between the panes
- A door that needs adjusting, rehanging or new seals
If in doubt, phone 0345 464 0079 or email us and we’ll say what we think before booking.
Joints and surfaces we work on
- uPVC windows
- Patio & French doors
- Window sills
- Aluminium frames
- Timber windows & doors
- Composite doors
How the job changes by surface
Patio & French doors
Not every patio door leak is a mastic problem: worn seals, blocked drainage slots or a poor threshold detail can be the cause. We check before we reseal.
Composite doors
An exposed front door gets wind-driven rain, and the top and bottom corners tend to fail first. We pay most attention there.
Do you need window mastic in Upper Common?
Sills take more water than any other part of a window, and the ends of the sill, where it meets the wall, are where it gets in. When that sealant fails, water gets into the wall or under the frame.
The problems people usually mention when they call are:
- Cracked sealant at the sill ends
- Cracked or shrunken mastic around the frame
- Untidy mastic left by window fitters
- Gaps between the frame and the inside reveal
If you live in an older home near Church of St. Martin, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Comparing quotes
- How hidden problems are handled
- What guarantee comes with the work
- How long to leave it before use
- Which colour the sealant will be
Questions from Upper Common
Can you do window mastic in Upper Common?
Yes, Upper Common is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or email us with a few details of the job.
Is Upper Common within the area you cover?
Yes, Upper Common is covered. Our work covers London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
Where is Mr Mastic based?
We work from Crawley. We cover Upper Common and the rest of Hampshire, along with the rest of our area.
How long does it take to reseal the windows on a house?
That depends on the number of frames, how they’re reached and the state of the old mastic. You will know the timing when we quote.
Does someone need to be in?
If the work is inside, we need someone to let us in. After that, you can carry on with your day.
What sealant do you use?
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 will tell you what we are using.
How long should I leave it?
Most sealants are touch-dry well before they’re fully cured. We will give you the cure time for the product we used before we leave.
Is it messy?
Not at all. We work neatly, protect the area around the joints and tidy up afterwards.
Towns and villages near Upper Common
Other services in Upper Common
How it works
All our tools and materials come with us in the van, so there’s nothing for you to buy. Once we have agreed what’s being done, we protect the area and start. Most jobs take a morning for a couple of windows and a door. Somewhere like Upper Common needs a little journey planning: let us know about lanes, gates and parking. We bring what the job needs, so it can be finished in one trip where possible.
- We check how each frame can be reached safely.
- All the failed sealant is cut away.
- Frame and wall are cleaned and must be dry before sealing.
- Deep voids are backed, then the sealant is gunned in.
- We tool the joint so water runs off, then clear up.
Before we arrive
- Let us know if you’ve seen damp or leaks
- Mention any parking rules near the property
- Move anything stored near the joints
How to get a quote
Quotes start with a quick conversation. Tell us what’s wrong, where it is and how much there is, and we’ll talk you through what we’d do. Whenever you are ready, ring 0345 464 0079 or drop us an email.
Related advice
Frames and glazing around Upper Common
The South East is one of the drier parts of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day. With historic houses such as Hall Place (about 3.9 miles south-east) nearby, there’s older building stock in the area around Upper Common as well as newer homes. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
If you let a flat or house near Basingstoke station, renewing tired window mastic between tenants heads off draught and damp complaints.
Upper Common is about 4 miles south of Basingstoke, in Hampshire. Every kind of property in Upper Common can book us for window mastic, old or new, large or small. Every job comes with our one-year guarantee. We cover 683 towns and villages across Hampshire, from the larger towns to small villages. You can also see our page for Reading, about 18 miles away.
Jobs for window mastic in RG25 is quoted and booked the same way as anywhere else. If you’re just outside Upper Common, we cover Ellisfield (1 mile north-east), Cliddesden (2 miles north), Nashes Green (3 miles east), Viables (3 miles north) and Eastrop (4 miles north). We also work in nearby towns such as Basingstoke (4 miles north), Winchester (14 miles south-west), Fleet (12 miles north-east), Aldershot (15 miles east), Alton (6 miles south-east) and Petersfield (15 miles south-east).
Around Upper Common
We work in homes and buildings around The Fox pub. Upper Common’s nearest station is Basingstoke station, about 4.4 miles north. Nearby you’ll also find Barton Castle (4.6 miles south) and Gliding Heritage Centre (3.5 miles south-east). The countryside around Upper Common includes Farleigh Hill.