Highland · Scotland
Reiss External Mastic
External mastic for Reiss, by sealant specialists with 20+ years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Rigid filler in a joint that should flex
- Water getting into walls through failed joints
- Plants rooting in failed movement joints
About our external mastic in Reiss
We cut out failed sealant, set the joint depth with closed-cell backing rod and reseal with a low-modulus exterior sealant. We pick a colour that sits well with the wall so the line blends in. If you have brick movement joints where the sealant has split and rain getting behind render or cladding at a joint, we can put it right, on façade panels, render & cladding joints and joints between brick and frames alike.
In and around a place like Reiss, many buildings face open ground and take the full weather. Gutter joints and wall joints take a battering.
The work is guaranteed for twelve months. If something isn’t right with it in that time, tell us and we’ll put it right.

- Location
- Reiss (KW1)
- Region
- Highland
- Guarantee
- One year on every job
- Price
- A clear price before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
Common problems we fix in Reiss
A lot of failed joints come down to preparation: dusty or wet faces, no primer where one was needed, or old sealant left in. The new sealant then lets go long before it should.
It’s worth asking for a quote if you see:
- Hard, crazed mastic that has stopped moving
- Sealant that has lost its bond to the brick or render
- Gaps where render, brick and frames meet
- Rain getting behind render or cladding at a joint
For landlords with property near Wick station, split movement joints are easy to miss on a rental until damp shows inside.
What your quote should include
- What happens if the job turns out different
- Is the old sealant removed completely?
- Which sealant they’ll use, and why
- How long to leave it before use
Walls and rooflines in Reiss
Reiss is within about 2 miles 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. Plenty of Scottish homes have harled walls, and joints where harling meets other materials need a sealant that can grip and flex.
Around Reiss, as everywhere, external mastic is only as good as the preparation behind it.
Reiss is about 16 miles south-east of Thurso, in Highland. We carry out external mastic for homes and businesses in Reiss, as part of our work across Highland. Reiss is one of 253 places in Highland where we work for external mastic.
Our applicators cover all of KW1 for external mastic and the streets around it. You will find streets such as Nordwall Park and Plover Place, all of which we cover. Main roads around Reiss include the A99. If you are just outside Reiss, we cover Ackergillshore (2 miles east), Haster (2 miles south), Wick (3 miles south-east), Staxigoe (4 miles south-east) and Whiterow (4 miles south-east). For island and remote addresses, the job takes a little more planning, so mention it when you ask for a quote.
Local landmarks in Reiss
For rail, the closest station is Wick station, about 3 miles south-east. Other landmarks nearby include Castle Sinclair Girnigoe (2.9 miles east) and Caithness General Hospital (3.1 miles south-east). For a walk, there’s Loch of Killimster.
What we do, step by step
There’s no need to move everything out before we come, only the area right around the joints. Everything nearby is protected, and the work takes a few hours to a few days, depending on the length of joint and the access for a typical job. For a place like Reiss, longer drives are planned in advance. Mention tracks, gates, ferries or anything else about the route.
- Each joint is checked and the colour of the new sealant agreed.
- Failed sealant is removed back to clean, sound faces.
- Backing rod goes in so the sealant can stretch between the two faces.
- We prime the faces where required.
- A low-modulus exterior sealant is gunned in and tooled to a neat finish.
Getting ready for the visit
- Let us know about stairs, lifts or work at height
- On commercial sites, let us know about site rules
- Plan for the work area to be out of bounds to pets and children
Get a quote
For external mastic in Reiss, drop us a line at info@mrmastic.co.uk. Tell us what the problem is and where, and we will agree the price before any work begins.
Read more
Common questions in Reiss
I let a flat near Wick station. Can you help?
Yes. We work for letting agents and landlords as well as householders. Just email us at info@mrmastic.co.uk with the address and what needs doing, and we’ll send you a clear quote.
Does the coastal weather in Reiss affect outside sealant?
Coastal homes put outside sealant through more weather than inland ones, so the choice of sealant and the preparation matter even more. It’s worth checking the walls that face the sea first.
Can you reach joints on upper floors?
That depends on how high the joints are and the ground below. Ground-floor joints are simple; for higher ones, send details and we’ll confirm the access.
When is the sealant fully cured?
Most sealants are touch-dry well before they’re fully cured. We’ll tell you how long to leave the joint before we leave.
Where do you work from?
Our base is Crawley, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Do you guarantee your work?
Yes: twelve months. If anything is not right with the work within the year, let us know and we will sort it.
How long will you be here?
Typically it takes anything from a few hours to several days, depending on the building. Larger jobs naturally take longer, and we’ll tell you how long to expect.
Can a movement joint be filled with mortar?
No. Rigid materials can’t move with the wall. If it has already been filled, we can usually cut it out and reseal it.
What else we do in Reiss
When something else is needed
New sealant can’t fix everything, and we’d rather say so up front. Sealant won’t put right:
- Damp from another source, such as a leaking gutter or a bridged damp-proof course
- Cracked brickwork or render that needs a builder or plasterer
- Adding movement joints to masonry that has none
If in doubt, email us at info@mrmastic.co.uk and we will say what we think before booking.
Where we work in Reiss
- Façade panels
- Render & cladding joints
- Concrete & block
- Joints between brick and frames
- Brickwork movement joints
- Copings & trims
Why deal with it now?
Mortar or ordinary filler might look like a quick way to close an open joint, but it locks the joint solid. The wall then cracks somewhere else. A flexible sealant over backing rod is what the joint needs. In a place like Reiss, small leaks are easy to put off, but water behind a failed seal does the most damage when nobody’s watching.
Commercial jobs are quoted on the same basis as homes: how much there is to do, how we reach it and what it needs, along with when we can work on site. Ask us for a quote and we will explain what it covers.
Why us?
- We never seal over old sealant
- Over 20 years’ experience
- We’re fully insured
- Rated 4.9 stars on Google
Take a look at our cost guide and our reviews.
For landlords and businesses
Whether it’s one flat or a portfolio, the work is the same standard: the old material taken out, careful preparation and a 12-month guarantee.
Failed sealant is one of the commonest items on a check-out report, and it’s easy to sort out between tenants. We can quote for more than one property at once.
Quotes for external mastic in Reiss
The quote reflects the job in front of us. We take into account:
- Whether the work is at height
- The type of sealant required
- Whether old sealant or filler has to be cut out
- When we can work, for business premises
Leaving a failed joint usually makes the job bigger, not smaller, because water and mould keep working on it. If you are not sure whether it needs doing, email us at info@mrmastic.co.uk for an honest opinion and a quote.
What we need to know
There’s no need for technical detail. Just tell us:
- If someone has resealed it before
- Access, such as stairs, a lift or height
- Roughly how big the job is
- If it’s domestic, commercial or a hotel
For a quote, email us at info@mrmastic.co.uk with the location and a short description of the problem. You will have a clear quote before any work starts.
Can I do it myself?
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so tell us about it when you ask for a quote.
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.
