Midlothian · Scotland
Window Mastic in Gowkshill
Mastic around window and door frames, sills and patio doors in Gowkshill, with a 12-month guarantee on every job. Call for a quick quote.
- Black, perished sealant on frames
- Rain getting in at the frame or under the sill
- Rushed sealant from a window installation
FAQs for Gowkshill
Can you help a landlord with a rental near Newtongrange station?
Yes, rental work is part of what we do. 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 any work starts.
Is Gowkshill within the area you cover?
Yes, we do. Our work covers the whole of Scotland, from towns to the smallest places. The journey is planned ahead, so it helps to know about access.
Can you match the sealant to my frames?
Yes, we choose a colour to suit the frame. Anthracite grey, black, brown and white cover most frames, with clear as an option.
Can you do several jobs on one visit?
Yes. Several rooms, windows or areas can go on one quote.
How long does it take to reseal the windows on a house?
The work takes a few hours for a handful of frames, longer for a whole house. Access and the amount of old mastic make the biggest difference.
Will new mastic stop draughts?
Yes, where the draught is at the frame edge. We check where the draught is before work begins.
Is it OK to seal over old sealant?
No. The old sealant always comes out first.
Do I need to be at home?
For indoor joints, yes, someone needs to let us in. After that, you can carry on with your day.
About our window mastic in Gowkshill
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. Where the air is getting in through the window itself, we’ll say so. We work on timber windows & doors, aluminium frames and window sills, and the jobs we see most are draughty joints inside around the window and cracked or shrunken mastic around the frame.
Across smaller places in Scotland, homes range from stone and harled cottages to newer houses, many standing in the open. Exposed frames and sills take the full force of wind-driven rain.
Whatever the size of the job, it’s backed by our one-year guarantee.
- Place
- Gowkshill (EH23)
- Region
- Midlothian
- Cover
- 12 months on all our work
- Quotes
- Quoted before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
What we do, step by step
A visit follows a simple pattern: we check the joints, mask and protect the surrounding surfaces, carry out the job and tidy away. Most jobs take a morning for a couple of windows and a door. Around Gowkshill, distance and access matter more than parking. Tell us how to find the property and how to reach the work, and the visit is planned around that.
- First, we confirm safe access to each frame.
- Old, cracked mastic is removed completely, along with any loose debris.
- The surfaces are cleaned and left dry, and primed where the sealant calls for it.
- Deep voids are backed, then the sealant is gunned in.
- The joint is shaped to shed water and the area tidied.
Before we arrive
- Move anything stored near the joints
- Keep children and pets away from the work area
- On commercial sites, let us know about site rules
Get a quote
Every job is quoted individually, so start by telling us what you need. Just drop us a line at info@mrmastic.co.uk with the details, and photos are welcome.
Advice
What happens if it’s left?
A quick bead over the top of old mastic looks like an easy fix, but new sealant cannot bond to old, crumbling mastic. It soon lifts and the leak carries on behind it. Proper resealing starts with removing the old joint. In an older home around Gowkshill, damp from a failed joint can get into timber and plaster.
What you pay reflects the work, not guesswork. That’s why we ask about the job first and agree the price before starting.
What you get with us
- Approved under the ARBOMaster scheme
- We never seal over old sealant
- Full insurance on every job
- Colour agreed with you before any work starts
Read our cost guide and our reviews.
Landlords, agents and businesses in Gowkshill
Housing providers, facilities teams and property managers book us too in Gowkshill and across Midlothian. Several sites can be quoted together.
Failed sealant is one of the commonest items on a check-out report. Several properties can be quoted together.
Towns and villages near Gowkshill
More services for Gowkshill
When it is not the sealant
We will not take on work that won’t last, so here’s what sealant can’t put right:
- A frame that has rotted at the joint
- Broken hinges, locks or handles
- Misting between the panes of a double-glazed unit (that needs a new unit)
Not sure which it is? You can send an email to info@mrmastic.co.uk and we’ll tell you honestly.
Surfaces we seal
- Composite doors
- Patio & French doors
- Window sills
- Aluminium frames
- uPVC windows
- Timber windows & doors
How the job changes by surface
Patio & French doors
The joints around patio doors run a long way, top, sides and threshold. The threshold and the bottom corners take the most water, so they get particular care.
Composite doors
An exposed front door gets wind-driven rain. We pay most attention there.
DIY versus a professional finish
A DIY attempt doesn’t rule out a professional job. We cut it out and start again, so tell us about it when you ask for a quote.
The biggest DIY mistake is sealing over old sealant. Silicone does not stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
Gowkshill homes and the weather
Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and sound outside sealant is part of that. Sash and case windows are common in older Scottish homes, and the joint between the box frame and the stone or render is traditionally pointed with sand mastic.
For an older house near a landmark such as Newtongrange Parish Church, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. Letting a property close to Newtongrange station? Then cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Gowkshill is about 2 miles south-east of Bonnyrigg, in Midlothian. Gowkshill gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. We cover 33 towns and villages across Midlothian, from the larger towns to small villages. Edinburgh is on our list too, around 8 miles away.
Our applicators cover all of the EH23 postcode area for window mastic. Window mastic is available to properties on The Crescent and Stobhill Road. Neighbouring places we cover for window mastic include Newtongrange (1 mile north), Gorebridge (1 mile south), Mayfield (1 mile north-east), Birkenside (2 miles south) and Easthouses (2 miles north). We also work in nearby towns such as Penicuik (7 miles west), Loanhead (4 miles west), Shawfair (5 miles north), Danderhall (4 miles north-west), Rosewell (3 miles west) and Roslin (4 miles west).
Local landmarks in Gowkshill
Around Gowkshill, our work takes us to homes and buildings near The Dean Tavern, among other places. Gowkshill’s nearest station is Newtongrange station, about 0.7 miles north-west. Well-known places in the area include Midlothian Community Hospital (2 miles north-west) and Dalhousie Castle (1.1 miles west). The countryside around Gowkshill includes Edgelaw Reservoir.
Signs you need window mastic in Gowkshill
Every frame moves through the day. Sun on a frame makes it expand, and it contracts again overnight, while the brick or render around it hardly moves. If the sealant can’t stretch, it splits.
The most common problems we see are:
- Cracked or shrunken mastic around the frame
- Draughty joints inside around the window
- Draughts coming in around windows and doors
- Damp patches on the reveal after heavy rain
Managing a site like Newbattle Community High School? Then its window and door frames need their mastic kept sound, just like a home’s.
What your quote should include
- When the joint can take water or movement
- What insurance they hold
- What guarantee comes with the work
- Whether all the old sealant comes out first