Scottish Borders · Scotland
Chirnside Window Mastic
Specialist window mastic for Chirnside: the right sealant, proper preparation and a neat finish. Ask us for a quick quote.
- Sealant in the wrong colour for the frame
- Hard, cracked sealant around windows
- Old mastic that has gone black or come away
DIY sealant or a professional job?
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas call for the right materials, safe access and experience.
Sealing over old silicone is the commonest DIY error. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
About our window mastic in Chirnside
Whether it’s one leaking patio door or every frame on the house, you will get a clear quote before any work starts. Just email us at info@mrmastic.co.uk and tell us how many frames there are and how they’re reached for window mastic in Chirnside. If you have cracked sealant at the sill ends and cold air getting in at the frame edge, we can help, whatever the surface.
Outdoor sealant needs a dry surface, so window work around Chirnside is planned around the weather. Let us know about access to every frame, including any upstairs.
Big or small, you get the same one-year guarantee in Chirnside and across the Scottish Borders.
- Place
- Chirnside (TD11)
- Region
- Scottish Borders
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Also in Chirnside
When to call us in Chirnside
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.
Signs it’s time to call us include:
- Hard, cracked sealant around windows
- White mastic on grey or black frames
- Black, perished sealant on frames
- Cracked internal joints between frame and plaster
For landlords with property near Reston station, renewing tired window mastic between tenants heads off draught and damp complaints.
Questions to ask before you book
- What happens if they find a problem under the old sealant
- The length of the guarantee
- Whether VAT is included
- Are they insured?
Keeping the joints in good condition
To keep the joints looking good and working properly:
- Don’t use solvent cleaners on the joint
- Check the mastic once a year
- Ventilate rooms so frames do not stay wet inside
- Use gentle cleaners on frames and sealant
Silicone cannot usually 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.
Water trapped behind a failed joint can start rot in timber frames and sills. Once wood has rotted, it needs repair before it can be sealed, so it pays to reseal before that happens.
What happens on the day
When we arrive, 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 starts. The work generally takes most of a day for a typical house, less for a few frames. Around Chirnside, distance and access matter more than parking. Let us know how to find you and how to reach the joints.
- We start by checking each window and door with you.
- We remove the old mastic and clean the frame and the wall.
- We fit backing rod in deep gaps so the sealant is the right 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
- Mention any sign-in or site rules at work premises
- Mention any leaks or damp you’ve noticed
- Let us know about stairs, lifts or work at height
Get a quote
Want a quote for window mastic? Please send an email to info@mrmastic.co.uk with a few details. We will explain what we’d do and give you a clear price before any work starts.
Advice
Frames and glazing around Chirnside
Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and failed outside joints work against that. Many older homes in Scotland have sash and case windows, and the joint between the box frame and the stone or render is traditionally pointed with sand mastic.
If you live in an older home near North Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. For site and facilities teams at buildings such as Chirnside Primary School, the mastic around its windows and doors needs looking after like any other building’s.
Chirnside is in the Scottish Borders. Anywhere in TD11, we can carry out window mastic at your property. Chirnside is one of 89 towns and villages in the Scottish Borders where we work for window mastic. We also work in Edinburgh, around 40 miles away.
We work across the TD11 postcode area for window mastic and the streets around it. If you need window mastic at a property on Main Street West End, Main Street East End and Windram Road or a nearby road, we can help. If you’re just outside Chirnside, we cover Reston (4 miles north), Ayton (4 miles north-east) and Preston (5 miles west).
Around Chirnside
The nearest railway station is Reston station, roughly 3.5 miles north. Nearby you’ll also find Blackadder House (1.6 miles south-west) and Knoll Hospital (5.3 miles west).
When something else is needed
Some problems need a builder, plumber or other trade rather than us:
- Penetrating damp from a failed cavity tray or render
- Rotten timber, which needs a joiner first
- Misting between the panes of a double-glazed unit (that needs a new unit)
Not sure which it is? You can email us at info@mrmastic.co.uk and we will tell you honestly.
Where we work in Chirnside
- Composite doors
- uPVC windows
- Window sills
- Timber windows & doors
- Aluminium frames
- Patio & French doors
Your questions about window mastic in Chirnside
Is Chirnside within the area you cover?
Yes. Chirnside is within the area we cover, which takes in towns, villages and rural addresses. Our work covers the whole of Scotland. Just mention lanes, gates or anything else about the route when you book.
Do you work for landlords with property near Reston station?
Yes, we work for letting agents and landlords. You can email us at info@mrmastic.co.uk with the address and a few details, and we will give you a fixed price before we start.
Do you have insurance?
Yes. Mr Mastic is fully insured.
What do you need from me for a quote?
A short description and the location, plus pictures if you have them. We’ll ask anything else we need to know.
Do you guarantee window mastic?
Yes, with our one-year guarantee. A yearly look at the joints helps them last.
Can I paint over the new sealant?
Not if it’s silicone. Tell us your decorating plans and we’ll pick a sealant to suit.
Is it OK to seal over old sealant?
No, because it fails. The old sealant always comes out first, so the new joint bonds to clean surfaces.
Can you quote for more than one area?
Yes. Just list everything you need.
Landlord and commercial work in Chirnside
For anyone letting property in or around Chirnside, several properties can go on one quote. Send us the addresses and the work at each, and photos by email help.
From a single let to a portfolio, the work is the same standard: old sealant fully removed, joints prepared properly and a 12-month guarantee.
Why deal with it now?
The work is quick compared with the damage it prevents: the visit takes most of a day for a typical house, less for a few frames. Leave it until water is coming in and you may need plastering and decorating as well. In a place like Chirnside, small leaks are easy to put off, but water behind a failed seal does the most damage when nobody’s watching.
A failed joint rarely gets cheaper to fix by waiting, because water and mould keep working on it. If you’re not sure whether it needs doing, email us at info@mrmastic.co.uk for an honest opinion and a quote.
Why Chirnside clients choose us
- A 12-month guarantee on all work
- Any old sealant cut out fully, not covered over
- Approved under the ARBOMaster scheme
- Full insurance on every job
Read our cost guide and customer reviews.