Hampshire · England
Window & door mastic in Old Basing, Hampshire
Problem with your window and door frames in Old Basing? We cut out the old, prepare the joints and apply the right sealant.
- Gaps where the sill meets the wall
- Draughty joints inside around the window
- Gaps left after new windows were fitted
Common problems we fix in Old Basing
Older frames were often sealed with products that set hard. Once it’s rigid, every bit of frame movement pulls at it, and a gap opens along one edge.
The problems people generally mention when they call are:
- White mastic on grey or black frames
- Whistling draughts around closed windows
- Mastic that is falling out in pieces
- Gaps where the sill meets the wall
Letting a property close to Basingstoke station? Then cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Comparing quotes
- Which colour the sealant will be
- What guarantee comes with the work
- What insurance they hold
- What the cure time is
About our window mastic in Old Basing
Around Old Basing we seal all kinds of frames: uPVC, aluminium, timber and composite, along with patio doors, French doors and sills. The sealant is chosen to suit the frame material and the wall. We work on uPVC windows, composite doors and window sills, and the jobs we see most are gaps between the frame and the inside reveal and whistling draughts around closed windows.
Houses in smaller places like Old Basing can stand more in the open than those in a built-up town. The mastic around frames on those walls tends to age faster.
Each job carries a 12-month guarantee, whatever its size.
- Location
- Old Basing (RG24)
- Region
- Hampshire
- Guarantee
- 12 months on all our work
- Price
- A clear quote up front
- Call
- 0345 464 0079
- Last updated
- 26 October 2026
What we cannot put right
We will not take on work that will not last, so these are the limits:
- Broken hinges, locks or handles
- Misting between the panes of a double-glazed unit (that needs a new unit)
- A frame that has rotted at the joint
Not sure which it is? You can call 0345 464 0079 or email us and we’ll tell you honestly.
Where we work in Old Basing
- Composite doors
- Aluminium frames
- Timber windows & doors
- uPVC windows
- Patio & French doors
- Window sills
What affects the cost of window mastic
You will get a clear quote before we start. It’s based on:
- How many rooms, windows or areas are involved
- The number and length of the joints
- The old material and how stubborn it is
- Access and height
The cost reflects the work involved, not a rough estimate. That is why we ask a few questions first and give you a clear price before any work starts.
Helping us quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- The type of property
- How we’d reach the joints
- Pictures of the joints, sent by email
- How many joints, rooms or windows are involved
For a quick quote, get us on the phone, or send an email if you’d rather. Describe what needs sealing and we will explain what’s involved and give you a clear quote.
Keeping the joints in good condition
Good habits help new joints last longer. A few tips:
- Avoid blasting the frames with a pressure washer
- Don’t use solvent cleaners on the joint
- Use gentle cleaners on frames and sealant
- Check the mastic once a year
Check the drainage slots in the frames are not blocked, so water can run away instead of sitting against the joint.
Look out for the warning signs: cracks in the mastic, gaps you can see light through, damp on the reveal or mould around the inside of the frame. If you notice one, it’s time to get the joint looked at.
Old Basing questions
Is Old Basing in your area for window mastic?
Yes, Old Basing is within the area we cover. We work across London and the South East. Just ring 0345 464 0079 or send us an email with a few details of the job, and we’ll give you a clear quote.
Do you work for landlords with property near Basingstoke station?
Yes. We work for landlords and agents as well as homeowners. You can call 0345 464 0079 or drop us an email with the details for a clear quote.
Do you guarantee window mastic?
Yes. Every job comes with our one-year guarantee, and we’re ARBOMaster approved applicators.
Do you have sealant for grey or black windows?
Yes, in most cases. Tell us the frame colour when you get in touch and we will use the nearest match.
Where do you work from?
Mr Mastic is based in Crawley. We cover Old Basing and the rest of Hampshire, along with the rest of our area.
Should I try DIY first?
Sometimes. Preparation is everything: all the old sealant out, and a clean, dry joint. We can always put it right if it fails.
How do I get a quote for window mastic in Old Basing?
We don’t publish prices, because the cost depends on the job: its size, the old material, access and the product needed. You’ll get a clear quote before work begins.
Can you do several jobs on one visit?
Yes. Tell us about everything you’d like done and we’ll quote it together.
The process
There isn’t much for you to do on the day. Show us the job and we’ll take it from there. The job generally takes most of a day for a typical house, less for a few frames, including the tidy-up. In a smaller place like Old Basing, parking is seldom the issue; lanes, gates and long drives are worth mentioning. For outside work, side access and the height of the joints help us plan.
- Each frame is looked over and we agree which ones need resealing.
- The old mastic is cut out and scraped back to clean surfaces.
- Where the gap is deep, backing rod goes in first.
- A flexible exterior sealant is applied in a colour to suit the frame.
- We tool each bead neatly and check every joint is closed.
Getting ready for the visit
- Keep pets and children clear of the area while we work
- Let us know about stairs, lifts or work at height
- Move anything stored near the joints
Get 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 send you a clear quote before any work starts.
Related advice
Landlords, agents and businesses in Old Basing
Letting agents often deal with us directly. Tell us the address, the job and how access works and we will give you a quote.
We work for letting agents and landlords as well as householders. Sealant work between tenants is a simple way to keep a property in good order.
DIY versus a professional finish
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.
Overfilling a joint is a classic DIY mistake. A heavy bead looks messy and copes badly with movement, and the joint depth matters as much as the finish.
Nearby places to Old Basing
What else we do in Old Basing
Window mastic in Old Basing: local notes
Compared with the north and west, the South East gets less rain, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. Historic houses like The Vyne (about 3.3 miles north-west) are a reminder that the area around Old Basing has older buildings as well as new. Where a home is older, older frames set in brick or stone need a sealant that suits them, and sometimes that’s traditional sand mastic.
If you live in an older home near Church of St Mary, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Managing a site like Old Basing Infant School? Then its window and door frames need their mastic kept sound, just like a home’s.
Old Basing is about 3 miles east of Basingstoke, in Hampshire. Across the RG24 area, our applicators can take on window mastic. We cover 683 towns and villages across Hampshire, large and small. We also work in Reading, about 13 miles from Old Basing.
All of RG24 is within our area for window mastic. You will find streets such as The Street, London Road and Paulet Place, all of which we cover. Other places close to Old Basing include Lychpit (1 mile west), Mapledurwell (1 mile east), Andwell (1 mile east), Water End (2 miles east) and Chineham (2 miles north). Further out, we also cover Basingstoke (3 miles west), Farnborough (12 miles east), Fleet (9 miles east), Aldershot (12 miles east), Alton (9 miles south) and Yateley (10 miles north-east).
Local landmarks in Old Basing
We work in homes and buildings around The Costello School, Eastrop Park and The Crown Public House, among other places. Old Basing’s nearest station is Basingstoke station, roughly 2 miles west. Nearby you will also find Festival Place (1.9 miles west) and Basing House (less than half a mile west). The countryside around Old Basing includes Farleigh Hill and The Mill Field.