Midlothian · Scotland
Danderhall Window Mastic
Mastic around window and door frames, sills and patio doors for householders, landlords and businesses in Danderhall. ARBOMaster approved applicators, fully insured, with a one-year guarantee.
- Whistling draughts around closed windows
- Gaps between the frame and the inside reveal
- Leaking joints at the ends of sills
Window mastic in Danderhall
From a single sill to a whole house of windows, you’ll get a clear quote before work begins. To get one, email us at info@mrmastic.co.uk with the number of frames and any access details. We work on window sills, uPVC windows and aluminium frames, and people most often call us about rain getting in at the frame or under the sill and a bead that doesn’t match the frame.
Mastic can only go onto a dry joint, so outside work in Danderhall depends on the weather, and longer journeys are planned in advance. Tell us about access to all the windows and doors, upstairs included.
Our work is backed for twelve months, and the guarantee is the same wherever you are.
- Location
- Danderhall (EH22)
- Region
- Midlothian
- Guarantee
- One year on every job
- Quote
- A clear price before any work starts
- info@mrmastic.co.uk
- Last updated
- 26 October 2026
Why it’s worth doing now in Danderhall
Draughts and leaks don’t always mean new windows. Where the frames are sound, new mastic usually deals with draughts and leaks at the edges. If we find failed glass units or worn seals, we’ll tell you. Around Danderhall, water from a failed joint in an older stone home can soak into timber and plaster.
Doing several joints on one visit is normally more efficient than separate visits, so it’s worth mentioning everything you’d like done. We will send you a clear quote for the lot.
What you get with us
- ARBOMaster approved applicator
- We never seal over old sealant
- Domestic, commercial and hotel work
- We’re fully insured
Take a look at what affects the cost or our reviews.
Also near Danderhall
Other services in Danderhall
Danderhall homes and the weather
Danderhall is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. Both are hard on the mastic around window and door frames, which can dry out and crack sooner where a building faces the weather. With historic houses such as Melville Castle (about 1.5 miles south) nearby, there’s older building stock in the area around Danderhall as well as newer homes. Where a home is older, older timber frames in brick or stone need a different approach from a modern uPVC window.
If you live in an older home near Newton Church, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. For landlords with property near Shawfair station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Danderhall is about 2 miles north-west of Dalkeith, in Midlothian. Our applicators cover window mastic for homes and businesses in Danderhall and the surrounding area, as part of our work across Midlothian. Danderhall is one of 33 towns and villages in Midlothian where we work for window mastic.
Every address in EH22 is covered for window mastic. Streets in the area include Newton Church Road, Forth View Crescent and Danderhall Crescent, all of which we cover. Neighbouring places we cover for window mastic include Fernieside (1 mile west), Ferniehill (1 mile west), The Wisp (1 mile north-west), Gilmerton (1 mile south-west) and Moredun (1 mile west). Larger places within reach include Bonnyrigg (3 miles south), Penicuik (7 miles south-west), Loanhead (3 miles south-west), Gorebridge (5 miles south-east), Newtongrange (4 miles south-east) and Mayfield (4 miles south-east). As one of the bigger places in Midlothian, Danderhall has every kind of property, from flats to offices.
Near you in Danderhall
In Danderhall, that means homes and buildings near Drum Park and the streets around them. Danderhall’s nearest station is Shawfair station, about 0.8 miles north-east of the centre. Other landmarks nearby include Natural History Collections (2.6 miles west) and Royal Infirmary of Edinburgh (1.3 miles north-west). The countryside around Danderhall includes Nether Hill and The New Leaf Co-op.
FAQs for Danderhall
I let a flat near Shawfair station. Can you help?
Yes, we work for landlords and letting agents. You can drop us a line at info@mrmastic.co.uk with the address and a few details, and we’ll give you a fixed price before we start.
Is Danderhall within the area you cover?
Yes. Danderhall is within the area we cover, which takes in towns, villages and rural addresses. We work across all of Scotland. Let us know about access, parking and anything unusual about getting there when you book.
Will the old sealant be removed?
Yes, every time. New silicone does not stick to old silicone, so any old material comes out before anything new goes in.
Where do you work from?
We’re a Crawley-based firm. We work across South East England, London and Scotland.
How do I get a quote for window mastic in Danderhall?
There’s no set price, as it depends on the job: its size, the old material, access and the product needed. We agree the price before any work begins.
How many windows can you do in a day?
The work takes a few hours for a few frames, or a day or more for a whole house. Access and how stubborn the old mastic is affect the time most.
Do you have insurance?
Yes. Full insurance covers our work.
Do you work for hotels and businesses?
Yes. Commercial and hotel work is a large part of what we do, as well as homes. Working times can be discussed when we quote.
Common problems we fix in Danderhall
Joints that are too thin or too deep fail early. A skim of sealant over a wide gap soon tears, and a gap filled solid can’t flex. That’s what backing rod is for.
Signs it’s time to call us include:
- Gaps where the sill meets the wall
- Black, perished sealant on frames
- Rain getting in at the frame or under the sill
- Hard, cracked sealant around windows
For site and facilities teams at buildings such as Castlebrae Community High School, its window and door frames need their mastic kept sound, just like a home’s.
Questions to ask before booking
- Which colour the sealant will be
- The length of the guarantee
- How hidden problems are handled
- Who turns up on the day
Landlord and commercial work in Danderhall
Businesses can book us for washrooms, kitchens, offices and more. On commercial sites, working times can be discussed when we quote.
Letting agents often deal with us directly. Tell us the address, the job and how access works and we’ll quote.
What we can’t put right
It helps to know what we cannot do too:
- Broken hinges, locks or handles
- Soft or decayed wood in the frame
- Damp problems in the wall away from the window
If in doubt, email us at info@mrmastic.co.uk and we’ll say what we think.
Where we work in Danderhall
- Window sills
- uPVC windows
- Timber windows & doors
- Aluminium frames
- Composite doors
- Patio & French doors
How to look after the new joints
Once the sealant has cured, a few habits help it last:
- Keep timber frames painted
- Don’t aim a pressure washer at the joints
- Look round the frames every year or so
- Wipe condensation off the frames
Try not to touch the new joint while it cures, for as long as we advise. Keep jet washers away from the frames.
Water trapped behind a failed joint can start rot in timber frames and sills. Rotten timber needs a joiner, not a sealant, so early resealing is worth it.
Can I do it myself?
Overfilling a joint is a classic DIY mistake. A thick, smeared bead looks untidy and does not move well, and the joint depth matters as much as the finish.
What a professional job adds is preparation and the right product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, then guaranteed for a year.
The process
At the end, we look at the finished work together and explain the cure time. The work normally takes a few hours for a few frames, or a day or more for a whole house, depending on the size of the job. For a place like Danderhall, longer drives are planned in advance. Tell us about tracks, gates, a ferry crossing or anything unusual about getting there.
- 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.
- We tool each bead neatly and check every joint is closed.
Getting ready for the visit
- Let us know about parking restrictions
- Mention if the joints have been sealed before
- Try not to wet indoor joints just before the visit
Getting a quote
If you’re in Danderhall and need window mastic, drop us a line at info@mrmastic.co.uk. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.