Dundee · Scotland
Longforgan Sand Mastic
Problem with your window and door surrounds in Longforgan? We cut out the old, prepare the joints and apply the right sealant.
- Wind and rain getting in round a sash window
- Gaps between timber frames and stone or brick
- Cement or filler used on old window joints that has cracked
Honest limits
To be straight with you, some problems need a different trade:
- Decisions on consent for listed homes
- Rotten sashes, sills or window boxes (a joiner’s job)
- Broken panes
If you are not sure, just drop us a line at info@mrmastic.co.uk and we’ll give you a straight answer.
What we seal
- Tenement windows
- Timber door frames
- Sash and case windows
- Period & listed homes
- Stone surrounds
- Brick reveals
Sand mastic in Longforgan, done properly
A silicone bead around a sash window can look out of place and does not suit the building. Sand mastic gives a finish that matches the age of the house, and we can replace one with the other. Typical jobs include modern sealant on a period surround and failed mastic on an exposed elevation, on timber door frames, tenement windows and sash and case windows.
Outdoor sealant needs a dry surface, so window work around Longforgan is planned around the weather, and longer journeys are planned in advance. Let us know about access to every frame, including any upstairs.
Every job is covered by a 12-month guarantee, wherever you are in Dundee.
- Location
- Longforgan (DD2)
- Wider area
- Dundee
- Guarantee
- A year, on every job
- Quotes
- A clear quote up front
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Also near Longforgan
Other services in Longforgan
Leave it or put it right?
Filling over old, loose mastic does not last. We remove the loose material first so the new mastic stays put. In an older home around Longforgan, damp from a failed joint can get into timber and plaster.
Homes and businesses are quoted the same way: the amount of work, the access and the products needed, plus any working-time requirements on site. Ask us for a quote and we will explain what it covers.
Why Longforgan clients choose us
- ARBOMaster approved applicator
- Domestic, commercial and hotel work
- Old sealant always removed completely
- We leave the area clean and tidy
See how sealant jobs are priced and our reviews.
How the visit works
Once we’re on site, we compare the joints with what we discussed. If anything is different, we explain it before carrying on. Most jobs then take anything from a few hours to a full day, depending on how many windows. Outdoor work around Longforgan depends on the weather, as sealant needs a dry surface, so an outdoor job can move if the forecast changes. Work indoors isn’t affected.
- We check the window surrounds and agree which joints need renewing.
- Old, loose mastic is raked out and the joint cleaned.
- We pack any deep gaps so the mastic sits at the right depth.
- We mix the sand mastic and apply it by hand, shaping it to the joint.
- The finish is dressed so it sits neatly against the stone or brick.
How to prepare
- On commercial sites, let us know about site rules
- Move anything stored near the joints
- Mention any leaks or damp you’ve noticed
How to get a quote
Quotes start with a quick conversation. Describe the problem, the location and the size of the job, and we will explain how we’d tackle it. When it suits you, email us at info@mrmastic.co.uk.
Advice
Frames and glazing around Longforgan
Longforgan is close to the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. That is hard on the mastic around older windows and doors, especially on the side facing the sea. Under the Repairing Standard, private landlords in Scotland have to keep homes wind and watertight, and sound outside sealant is part of that.
For an older house near a landmark such as Longforgan Parish Church, frames set in older brick or stone need a sealant that suits the wall as well as the frame.
Longforgan is about 6 miles west of Dundee, in Dundee. From the centre of Longforgan to the outskirts, we cover sand mastic for every kind of property. Our area takes in 50 places across Dundee, from the larger towns to small villages. There’s also a page for Dundee, about 6 miles away.
We work across the DD2 postcode area for sand mastic and the streets around it. Local streets include Main Street, Dorward Place and Paterson Place. Other places close to Longforgan include Inchture (2 miles south-west), Kingoodie (2 miles east), Invergowrie (2 miles north-east), Fowlis (2 miles north) and Liff (2 miles north-east). Further out, we also cover Dundee (6 miles east), Broughty Ferry (10 miles east), Stobswell (6 miles east), Monifieth (11 miles east), Blackness (5 miles east) and Barnhill (10 miles east).
Local landmarks in Longforgan
For rail, the closest station is Invergowrie station, about 2.5 miles east. Nearby you’ll also find Royal Dundee Liff Hospital (2.7 miles north-east) and Castle Huntly (0.7 miles south-west). Green spaces nearby include Rossie Lake and Balgay Hill.
Landlord and commercial work in Longforgan
In hotels, rooms out of use cost money, so we plan the work room by room around your bookings where we can. We have worked in hotels as well as homes and businesses.
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Should I try it myself first?
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and getting the depth right matters as much as the look.
Some sealant jobs are within reach of a careful DIYer, like a short, easy-to-reach joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Aftercare tips
To keep the joints looking good and working properly:
- Leave the new mastic unpainted
- Ask the planning authority about consent for listed or conservation-area homes
- Make sure water runs off the sill
- Keep modern sealant off the mastic
Don’t touch or press the mastic while it hardens. It forms a skin fairly soon, but takes longer to harden fully.
Sound mastic protects the frame. Once it fails, water can sit against the timber and timber that stays wet can rot.
Signs you need sand mastic in Longforgan
Some old mastic was never deep enough. A thin layer doesn’t hold well, which is why we pack deep voids first and get the depth right.
If you can see any of these, it’s time to have the joints looked at:
- Draughty sash windows at the surround
- Gaps round a timber door in stone or brick
- Silicone on a period window that looks wrong
- Tired mastic found when preparing windows for paint
Letting a property close to Invergowrie station? Then older sash windows in a rental need their mastic kept sound to keep the weather out.
What to look for in a quote
- Are they insured?
- What happens if they find a problem under the old sealant
- Is the old sealant removed completely?
- How the surfaces are prepared before sealing
Common questions in Longforgan
Does living near the coast affect sand mastic in Longforgan?
Coastal weather is harder on outside sealant: there’s more wind-driven rain and, closer to the shore, salt in the air. Choosing the right sealant for the frame and wall, laid at the right depth, helps it last.
Can you help a landlord with a rental near Invergowrie station?
Yes, rental work is part of what we do. Just send an email to info@mrmastic.co.uk and tell us about the property, and we will send you a clear quote.
Do you cover Longforgan?
We do. Longforgan is part of the area we cover.
Will the old sealant be removed?
Yes, every time. New silicone does not stick to old silicone, so the joint is cleaned back first.
Should I use sand mastic or silicone?
We will talk it through with you. Sand mastic suits many period homes, and modern sealants suit newer frames.
Is it worth trying it myself?
You can, for simple jobs. The key is preparation: remove all the old material and work on a clean, dry joint. If it doesn’t work out, we can redo it.
How much does sand mastic cost in Longforgan?
The cost depends on the size of the job, access and how much old sealant has to come out. Ask us for a quote.
Is consent needed for window work on a listed home?
Check with your local planning authority. They decide whether consent is needed.