Orkney Islands · Scotland
External Mastic in Tenston
External mastic across Tenston and nearby, with old sealant always removed completely.
- Joints with sealant missing in places
- Damp patches traced to an open external joint
- Moss and dirt in joints with no sealant left
External mastic for homes and businesses in Tenston
Short cuts in external joints show up within a season or two. New sealant over old, joints packed with mortar and beads with no backing rarely last long. We take the old material out and do it properly. We’re often asked to deal with damp patches traced to an open external joint and cracked joints where brick meets render or frames, across façade panels, brickwork movement joints and joints between brick and frames.
Older stone buildings need a sealant that suits the stone, not an acetoxy product that can mark or attack it. Newer houses need their movement joints and roofline trims kept sound.
A 12-month guarantee comes as standard, so you’re not left on your own once the job is done.
- Where
- Tenston (KW16)
- Wider area
- Orkney Islands
- Guarantee
- One year on every job
- Quote
- A clear price before work begins
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Aftercare tips
Joint life depends on how it’s used and looked after. Here’s what we suggest:
- Clear growth from the base of walls and joints
- Check external joints each spring
- Keep water from gutters off the wall
- Make sure movement joints aren’t pointed over
Keep pressure washers away from the sealant. A strong jet can damage the edges of the bead.
Act while the splits are small. At that stage it’s a simple cut out and reseal.
Other services in Tenston
Questions from Tenston
Does living near the coast affect external mastic in Tenston?
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.
Do you cover Tenston for external mastic?
Yes, Tenston is within the area we cover. We work across all of Scotland. Just drop us a line at info@mrmastic.co.uk with a few details of the job, and we will give you a clear quote.
Where are you based?
We work from Crawley. We cover Tenston and the rest of the Orkney Islands.
Are you fully insured?
Yes. We’re fully insured for every job we do.
Will it make a mess?
Tidy work is part of the job. Nearby surfaces are protected.
Can you seal joints between render and window frames?
Yes. Different materials move at different rates, so a flexible sealant is needed where they meet. We choose one that suits both surfaces.
Do you work for landlords and businesses?
Yes, regularly. Several properties can go on one quote, and between tenancies is a good time for the work.
Should I try DIY first?
It depends on the job. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional, while a short indoor joint may be within reach.
Work for landlords, hotels and businesses
Mouldy or split sealant often shows up at the end of a tenancy, and it’s easy to sort out between tenants. We can quote for more than one property at once.
If you manage several properties in or around Tenston, jobs at different addresses can be quoted together. Just tell us the addresses and what each one needs, and pictures by email help.
Tenston buildings and the weather
Tenston is within about 1 mile of the coast, and homes near the sea take more wind-driven rain, with salt in the air closer to the shore. Both are hard on movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. On the islands, wind and salt spray are hard on outside sealant.
In and around Tenston, as anywhere, good external mastic starts with a clean, dry, properly prepared joint. Historic houses such as Skaill House, about 2.8 miles north-west, show how far back building around Tenston goes, and older homes nearby need a sealant that suits their walls.
Tenston is about 12 miles west of Kirkwall, in the Orkney Islands. Wherever you are in the KW16 postcode area, our applicators can take on external mastic. Across the Orkney Islands, we cover 51 places, Tenston among them.
Our applicators cover all of KW16 for external mastic. We also cover the places around Tenston: Wasbister (1 mile south), Russland (2 miles north-east), Hourston (2 miles north-east), Skeabrae (3 miles north) and Harray (3 miles east). If you are somewhere remote, a little more planning is needed, so let us know when you get in touch.
Landmarks near Tenston
Well-known places in the area include Skara Brae Visitor Centre (2.8 miles north-west). The countryside around Tenston includes Mill Dam of Rango and Hill of Miffia.
What affects the cost of external mastic
We quote each job individually. This is what makes a difference:
- The product the joint needs
- How easy the joints are to reach
- Any mould that needs treating
- How many rooms, windows or areas are involved
Combining jobs into one visit is generally more efficient than separate visits, so it’s worth mentioning everything you’d like done. You will get one clear quote for the whole job.
What to tell us for a quote
The more you tell us, the more accurate the quote. When you ask for a quote, tell us:
- Access, such as stairs, a lift or height
- The rough size of the job
- What the problem is, such as mould, gaps, leaks or cracking
- Where the job is, and your postcode
To get a quote, email us at info@mrmastic.co.uk with the location and a short description of the problem. We will give you a clear quote before any work starts.
Should I try it myself first?
If you do try it yourself, take your time over the preparation: remove every trace of old sealant, clean and dry the joint, and follow the product’s cure time. If it fails, we can still redo it.
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it lifts and traps water and mould underneath. Everything old must be removed first.
Surface by surface
Cladding and façade panels
Cladding and façade panels are usually separated by sealed joints. We reseal them with a sealant suited to the panel material.
Copings and trims
Coping joints that leak let water straight down into the wall. Sealing them early saves the wall below.
What sealant work can’t fix
We’d rather tell you now than do work that won’t last, so here’s what sealant cannot put right:
- Structural movement, which needs a surveyor or engineer
- Adding movement joints to masonry that has none
- Cracked brickwork or render that needs a builder or plasterer
If you’re not sure, just email us at info@mrmastic.co.uk and we will give you a straight answer.
What we seal
- Concrete & block
- Copings & trims
- Brickwork movement joints
- Render & cladding joints
- Façade panels
- Joints between brick and frames
How it works
You don’t need to clear the whole room or building before we come, just the space around the work. Everything nearby is protected, and the work takes a few hours for a handful of joints, longer for a whole elevation in most cases. Somewhere like Tenston may be a longer drive, and the journey is planned ahead. Mention tracks, gates, ferries or anything else about the route.
- We start by checking each joint, agreeing the ones to redo and how we will reach them.
- Old sealant and any debris are cut and raked out.
- Both sides are cleaned back to sound material and primed if needed.
- Closed-cell backing rod is fitted to set the depth and stop three-sided bonding.
- We gun in a flexible exterior sealant in a colour that suits the wall and tool it neatly.
Before we arrive
- Mention any parking rules near the property
- Let us know about stairs, lifts or work at height
- Where the joints are inside, avoid wetting them before we arrive
Ask for a quote
We quote each job on its own, so start by telling us what you need. Just drop us a line at info@mrmastic.co.uk with the details and send photos if you have them.