Midlothian · Scotland
Howgate Window Mastic
Window mastic in Howgate from a team with over 20 years’ experience. 180+ five-star Google reviews and a 4.9 rating.
- Gaps where the sill meets the wall
- Damp patches on the reveal after heavy rain
- Draughty joints inside around the window
Window mastic in Howgate: local notes
Many older homes in Scotland have sash and case windows, often pointed into the wall with traditional sand mastic. Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and failed outside joints work against that.
Managing a site like Wellington School? Then larger buildings have plenty of frames, and the mastic around each one ages.
Howgate is about 2 miles south-east of Penicuik, in Midlothian. Howgate gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Our Midlothian coverage runs to 33 places, and Howgate is one of them. There’s also a page for Edinburgh, about 9 miles away.
We work across EH26 for window mastic and the streets around it. Neighbouring places we cover for window mastic include Penicuik (2 miles north-west), Milton Bridge (3 miles north), Silverburn (3 miles north-west), Swanston (6 miles north) and Bonaly (6 miles north). Larger places within reach include Bonnyrigg (6 miles north-east), Dalkeith (8 miles north-east), Loanhead (5 miles north), Gorebridge (6 miles east), Newtongrange (7 miles north-east) and Mayfield (8 miles north-east).
Around Howgate
In Howgate, that means homes and buildings near Penicuik High School, among other places. Nearby you’ll also find Ravensneuk Castle (1.6 miles west) and Penicuik Paper Heritage Museum (1.1 miles north-west). For a walk, there’s Turnhouse Hill and Edgelaw Reservoir.
Window mastic in Howgate
Over two decades of sealing frames has taught us which products suit which walls. We are fully insured ARBOMaster approved applicators, and every job is covered by a 12-month guarantee. We work on window sills, timber windows & doors and composite doors, and common reasons people get in touch are cracked or shrunken mastic around the frame and cracked internal joints between frame and plaster.
Mastic can only go onto a dry joint, so outside work in Howgate depends on the weather, and longer journeys are planned in advance. Tell us about access to all the windows and doors, upstairs included.
All our work is covered by our one-year guarantee, wherever you are in Midlothian.
- Where
- Howgate (EH26)
- Region
- Midlothian
- Guarantee
- One year on every job
- Quote
- A clear price before work begins
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Common problems we fix in Howgate
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. If the sealant cannot stretch, it splits.
These are the problems we’re asked about most:
- Draughts coming in around windows and doors
- White mastic on grey or black frames
- Damp patches on the reveal after heavy rain
- Rushed sealant from a window installation
In the older streets around Howgate Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
What to look for in a quote
- Is VAT in the price?
- The length of the guarantee
- What happens if they find a problem under the old sealant
- What preparation is included
What sealant work cannot fix
To be straight with you, there are a few things sealant will not fix:
- Faulty window hardware
- A door that needs adjusting, rehanging or new seals
- A frame that has rotted at the joint
If in doubt, email us at info@mrmastic.co.uk and we will say what we think before you book.
What we seal
- Patio & French doors
- Composite doors
- Window sills
- Timber windows & doors
- Aluminium frames
- uPVC windows
Questions from Howgate
Is Howgate within the area you cover?
Yes, smaller places are covered as well as towns. We work across all of Scotland. Let us know about access, parking and anything unusual about getting there when you book.
Can you do window mastic in Howgate?
Yes, Howgate is within the area we cover. We work across all of Scotland. Just email us at info@mrmastic.co.uk with a few details of the job.
Can you get sealant to suit coloured frames?
Yes. Anthracite grey, black, brown and white cover most frames, with clear as an option.
Where are you based?
Our base is in Crawley, and we work across South East England, London and Scotland.
How long will my window job take?
The work takes a morning for a couple of windows and a door. Access and the amount of old mastic make the biggest difference.
Do the sealants smell?
That depends on the sealant. Some smell for a while, some hardly at all.
What information do you need?
Tell us what needs doing and where, with photos by email if possible. If we need more, we will ask.
Which products do you use?
The product depends on the job: sanitary silicone where it gets wet, and sealants suited to movement or weather elsewhere. Brands we use include Arbo and Everbuild.
DIY sealant or a professional job?
A DIY attempt doesn’t rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.
The difference is mostly in the preparation and the product. Joints are cleaned back to sound surfaces and dried, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
How we quote for window mastic
For a quick quote, just ask. What matters most is:
- Any mould that needs treating
- The number of rooms or windows
- Access and height
- Working hours on commercial sites
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, drop us a line at info@mrmastic.co.uk and we’ll give you an honest view and a quote.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you get in contact, it helps to mention:
- Any previous sealing or DIY work
- Roughly how big the job is
- Access, such as stairs, a lift or height
- What’s wrong with the joints now
If you’re in Howgate and need window mastic, email us at info@mrmastic.co.uk. Tell us what the problem is and where, and we’ll agree the price before any work begins.
Leave it or put it right?
If you are painting or rendering, reseal at the same time. Fresh joints finish the job neatly, and it’s easier while the walls are being worked on anyway. In a place like Howgate, small leaks are easy to put off, but water behind a failed seal does the most damage when nobody’s watching.
The cost depends on how much there is to do, how much old material has to come out and how easy the joints are to reach. We give a clear quote before any work starts, so you know where you stand.
Why Howgate customers choose us
- Any old sealant cut out fully, not covered over
- Anti-fungal sanitary silicone in wet areas
- Arbo and Everbuild products
- White, clear, grey or another colour, product permitting
Read what affects the cost or our reviews.
How the visit works
All our tools and materials come with us in the van, so there’s nothing for you to buy. After a quick look at the joints together, the area is protected and the work begins. Most jobs take a morning for a couple of windows and a door. Around Howgate, 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.
- Next the failed sealant is cut away and the joint cleaned.
- Deep gaps are filled with backing rod to set the depth.
- A flexible, weatherproof sealant is applied in a colour to suit the frame.
- Finally we tidy up and check each joint.
Before we arrive
- Let us know about stairs, lifts or work at height
- Let us know about parking restrictions
- Clear items away from the joints we’re working on
Get a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job. When it suits you, email us at info@mrmastic.co.uk.
Related advice
Work for landlords, hotels and businesses
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Mouldy or split sealant often shows up at the end of a tenancy. We can quote for more than one property at once.