Highland · Scotland
Diuranais Window Mastic
Our applicators work in Diuranais on mastic around window and door frames, sills and patio doors. Old material cut out, joints cleaned and sealed neatly and a one-year guarantee.
- Cracked sealant at the sill ends
- Water coming in at the bottom corners of a door
- Draughty joints inside around the window
When it is not the sealant
We’d rather tell you now than do work that won’t last, so here’s what sealant cannot put right:
- Faulty window hardware
- Damp coming through the wall itself rather than the frame joint
- Draughts through the window seals rather than the frame
If in doubt, drop us a line at info@mrmastic.co.uk and we’ll say what we think.
Surfaces we seal
- Patio & French doors
- uPVC windows
- Timber windows & doors
- Window sills
- Composite doors
- Aluminium frames
Window mastic for homes and businesses in Diuranais
Whether it’s one leaking patio door or every frame on the house, the work is priced before anything is done. To get one, send an email to info@mrmastic.co.uk with the number of frames and any access details. If you have damp patches on the reveal after heavy rain and gaps left after new windows were fitted, we can help, on uPVC windows, patio & French doors and timber windows & doors alike.
In and around a place like Diuranais, homes range from older stone-built cottages to newer houses. Wind-driven rain finds any gap around a frame or sill, so the mastic there works hard.
Whatever the size of the job, you get the same one-year guarantee in Diuranais and across Highland.
- Place
- Diuranais (IV27)
- Region
- Highland
- Cover
- 12 months on all our work
- Quote
- Quoted before any work starts
- info@mrmastic.co.uk
- Updated
- 26 October 2026
How it works
When we arrive, we look over the joints with you first. Surfaces next to the work are protected before work begins. Most jobs take a morning for a couple of windows and a door. Around Diuranais, distance and access matter more than parking. Let us know how to find you and how to reach the joints, and the visit is planned around that.
- First, we go round the frames with you and agree the list.
- We remove the old mastic and clean the frame edge and wall.
- Deep gaps get closed-cell backing rod to set the depth.
- The new sealant goes on in white, brown, anthracite grey, black or clear to suit.
- Every joint is tooled smooth and checked before we leave.
How to prepare
- Plan for the work area to be out of bounds to pets and children
- Tell us about any water getting in
- Mention any parking rules near the property
Get a quote
To get a quote, send an email to info@mrmastic.co.uk and tell us where the job is and what the problem looks like. You’ll have a clear quote before we start.
Advice
Can I do it myself?
The difference is mostly in the preparation and the product. We take joints back to clean, dry surfaces, and the sealant is chosen for how the joint moves and where it is, and the work is guaranteed for a year.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly.
Why deal with it now?
A quick bead over the top of old mastic looks like an easy fix, but it won’t grip old, dirty sealant. It peels before long, and water still gets in behind. The old mastic has to come out. In a place like Diuranais, small leaks are easy to put off, but water behind a failed seal does the most damage when nobody’s watching.
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. Call for a quick quote and we’ll explain what it covers.
Why choose Mr Mastic in Diuranais
- Homes, businesses and hotels
- An ARBOMaster approved applicator
- A sealant colour to suit the surroundings
- You choose the colour before work begins
What window mastic looks like in Diuranais
Diuranais is close to the coast, where wind-driven rain is a fact of life and, nearer the shore, so is salt air. That’s hard on the mastic around window and door frames, 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 jobs in and around Diuranais, choosing the right material for each joint is as important as a tidy finish. In and around Diuranais, as anywhere, good window mastic starts with a clean, dry, properly prepared joint.
Diuranais (Gaelic: Durness) is in Highland. We provide window mastic to homeowners, landlords and businesses in Diuranais and the surrounding area. Diuranais is one of 253 places in Highland we cover for window mastic.
Every address in IV27 is covered for window mastic. We cover properties on Hames Place and School Road and the roads around them. If you are just outside Diuranais, we cover Smoo (1 mile south-east), Melness (12 miles east), Kinlochbervie (13 miles south-west), Tongue (14 miles south-east) and Scourie (21 miles south-west). For island and remote addresses, the job takes a little more planning, so mention it when you ask for a quote.
Local landmarks in Diuranais
Green spaces nearby include Loch Bad an Fheur-loch.
Landlords, agents and businesses in Diuranais
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Keeping joints in good order is simple maintenance that we can handle for you.
From a single let to a portfolio, you get the same standard of work: the old material taken out, careful preparation and a 12-month guarantee.
Keeping the joints in good condition
Once the sealant has cured, a few habits help it last:
- Keep drainage slots and sill grooves clear
- Ventilate rooms so frames do not stay wet inside
- Keep paint off silicone joints
- Avoid blasting the frames with a pressure washer
Timber frames need their paint kept up, because bare, wet timber moves more and pulls at the joint. Paint up to the joint, not over the silicone.
Leaks normally show up in wet, windy weather, but sealant goes on best when frames and walls are dry. Dealing with it when you first notice a crack avoids chasing leaks through the wet months.
Surface by surface
Window sills
The end joints of a sill tend to fail before the rest. A tight seal at each end keeps rain out of the wall.
uPVC windows
Some uPVC windows were sealed at fitting with a quick bead that never bonded. It comes out, deep gaps get backing rod and the joint is resealed.
Also near Diuranais
Other services in Diuranais
Diuranais questions
Do you cover smaller places like Diuranais?
Yes, smaller places are covered as well as towns. Our work covers the whole of Scotland. Let us know about access, parking and anything unusual about getting there when you book.
Is Diuranais in your area for window mastic?
Yes. We work across all of Scotland, and Diuranais is part of that. Just send an email to info@mrmastic.co.uk with a few details of the job.
Can you get sealant to suit coloured frames?
Yes. We can use white, brown, anthracite grey, black or clear.
Can tenants book the work?
Yes, but check with your landlord or agent first. Landlords are often happy for the work to be arranged.
Are you an approved applicator?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
Do you take out the old sealant first?
Yes, every time. New silicone doesn’t stick to old silicone, so the joint is cleaned back first.
Do you seal inside as well as outside?
Yes. The outside joint keeps the weather out, and the inside joint stops draughts and finishes the reveal. We can do either or both.
Do you work for landlords and businesses?
Yes, often. Several properties can be quoted together.