Dumfries and Galloway · Scotland
Window & door mastic in Kelhead, Dumfries and Galloway
Mastic around window and door frames, sills and patio doors for Kelhead, backed by a 12-month guarantee. Ask us for a quote.
- Water coming in at the bottom corners of a door
- Hard, cracked sealant around windows
- Cold air getting in at the frame edge
Surface by surface
Patio & French doors
Water at the foot of a door frame is not always the mastic: worn seals, blocked drainage slots or a poor threshold detail can be the cause. We look for the cause first.
Window sills
Where a sill meets brick or render, the ends often crack first. We reseal them so rain cannot run into the wall.
How we handle window mastic in Kelhead
There are two joints on most windows. Outside, the mastic keeps rain out; inside, the joint between frame and plaster stops draughts and tidies the reveal. Either or both can be done. We work on uPVC windows, timber windows & doors and window sills, and the jobs we see most are whistling draughts around closed windows and leaking joints at the ends of sills.
Older stone-built homes in Scotland often have sash and case or timber windows set in stone. Those suit a traditional sand mastic or a neutral-cure sealant, not an acetoxy silicone that can attack some stone.
We stand behind the work with a 12-month guarantee.
- Place
- Kelhead (DG12)
- Wider area
- Dumfries and Galloway
- Cover
- A year, on every job
- Quote
- Quoted before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
DIY versus a professional finish
If you’ve already had a go yourself, that is fine. We remove it and do the joint properly.
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it peels away and traps moisture behind it. All the old material has to come out first.
What window mastic looks like in Kelhead
Kelhead is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That is hard on the mastic around window and door frames, especially on the side facing the sea. Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and failed outside joints work against that.
In and around Kelhead, as anywhere, good window mastic starts with a clean, dry, properly prepared joint.
Kelhead is about 11 miles east of Dumfries, in Dumfries and Galloway. From the centre of Kelhead to the outskirts, window mastic is available for homes and businesses alike. Kelhead is one of 138 towns and villages in Dumfries and Galloway we cover. Our Edinburgh page covers work nearby.
Work in DG12 is quoted and booked the same way as anywhere else. We also cover the places around Kelhead: Cummertrees (2 miles south), Powfoot (2 miles south), Brydekirk (3 miles east), Howes (3 miles south-east) and Newbie (3 miles south-east). Further out, we also cover Dumfries (11 miles west), Annan (4 miles south-east), Lockerbie (8 miles north), Heathhall (11 miles north-west), Newbridge Drive (13 miles north-west) and Gretna (11 miles east).
Local landmarks in Kelhead
For rail, the closest station is Annan station, about 3.6 miles south-east of the centre. A little further out are Ruthwell Museum (3 miles south-west) and Annan Hospital (4 miles south-east).
Quotes for window mastic in Kelhead
You’ll get a clear quote before any work starts. It takes into account:
- Which sealant suits the joint
- Any mould that needs treating
- Whether old sealant or filler has to be cut out
- Access and height
Rather than a set price list, we look at what your job involves: how many joints, what’s in them now and how we reach them. The price is agreed before we begin.
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
- What’s wrong with the joints now
- Any access issues, like height or stairs
- The address or postcode of the job
If you’re in Kelhead and need window mastic, email us at info@mrmastic.co.uk. A short description of the job and where it is helps us quote, and you’ll get a clear quote before work begins.
Leave it or put it right?
Working on frames from a ladder with a sealant gun is not easy, especially on upper floors. A professional job is cut out properly, backed where needed and finished neatly, using a product chosen for the frame and wall. Out of town in Scotland, exposed walls take a lot of weather, and once water gets behind a failed joint, damp in stone or harled walls is slow to dry out.
A failed joint rarely gets cheaper to fix by waiting, as water and mould keep getting in. If you are unsure, drop us a line at info@mrmastic.co.uk for an honest opinion and a quote.
Why Kelhead customers choose us
- Anti-fungal silicone where joints get wet
- Tidy, careful work
- You choose the colour before work begins
- We never seal over old sealant
Take a look at what affects the cost and what customers say.
Do you need window mastic in Kelhead?
Every frame moves through the day. A plastic or aluminium frame lengthens in sunshine and shortens as it cools, while the masonry beside it stays put. A sealant that can’t keep up eventually tears.
The most common problems we see are:
- Untidy mastic left by window fitters
- Draughts coming in around windows and doors
- Sealant in the wrong colour for the frame
- Old mastic that has gone black or come away
Rented homes near Annan 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.
Questions to ask before booking
- Whether the sealant suits the joint
- What the cure time is
- How the colour is chosen
- Whether they seal over old material or remove it
When it isn’t the sealant
We’d rather tell you now than do work that will not last, so here’s what sealant cannot put right:
- Worn gaskets, brush seals or a door that has dropped
- Damp coming through the wall itself rather than the frame joint
- Broken hinges, locks or handles
Not sure which it is? You can email us at info@mrmastic.co.uk and we will tell you honestly.
Surfaces we seal
- Composite doors
- Timber windows & doors
- Aluminium frames
- Window sills
- Patio & French doors
- uPVC windows
How it works
Most of a good job is in the preparation, so that is where we spend the time. Joints are cleaned back and dried before anything new goes in. In total, it usually takes most of a day for a typical house, less for a few frames. Outside jobs in Kelhead need a dry day, because sealant will not bond to a wet joint, so an outdoor job can move if the forecast changes. Work indoors is not affected.
- Each frame is looked over and we agree which ones need resealing.
- We remove the old mastic and clean the frame edge and wall.
- Where the gap is deep, backing rod goes in first.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- Every joint is tooled smooth and checked before we leave.
Before we arrive
- Mention if the joints have been sealed before
- Plan for the work area to be out of bounds to pets and children
- Tell us about any water getting in
Getting a quote
Asking for a quote is easy: tell us what needs doing and where and its rough size. Photos by email help us understand the job, and we will come back to you with a quote.
Related advice
Nearby places to Kelhead
Other services in Kelhead
Common questions in Kelhead
Is Kelhead within the area you cover?
Yes. Kelhead is within the area we cover, which takes in towns, villages and rural addresses. We work across all of Scotland. Just mention lanes, gates or anything else about the route when you book.
I let a flat near Annan station. Can you help?
Yes, we work for letting agents and landlords. Just send an email to info@mrmastic.co.uk and tell us about the property, and we will give you a clear price.
Can I do it myself?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional, while a short indoor joint may be within reach.
Is the work guaranteed?
Yes. All our work carries a 12-month guarantee, and we’re fully insured.
Can new window sealant be painted?
That depends on the product. Some hybrid sealants can be painted; silicone can’t. Mention any painting plans before work begins.
Are you insured?
Yes, we are fully insured for domestic and commercial work.
Where do you work from?
Mr Mastic is based in Crawley. We cover Kelhead and the rest of Dumfries and Galloway, along with the rest of our area.
What do you put in the joint?
It depends on the joint: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. We use products from Arbo and Everbuild.