East Lothian · Scotland
Innerwick External Mastic
External mastic in Innerwick from a team with over 20 years’ experience. Rated 4.9 on Google from 180+ five-star reviews.
- Plants rooting in failed movement joints
- Failed seals between different materials
- Panel joints letting water in
External mastic in Innerwick
Joints in render and cladding are easy to overlook until a damp patch appears. We inspect them, agree which need doing and reseal with a weatherproof, flexible sealant in a matching colour. We work on render & cladding joints, façade panels and brickwork movement joints, and people most often call us about panel joints letting water in and movement joints with cracked, split or missing sealant.
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.
Every job comes with our 12-month guarantee.
- Place
- Innerwick (EH42)
- Region
- East Lothian
- Cover
- A year, on every job
- Price
- Quoted before any work starts
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
DIY versus a professional finish
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 does not work out, we can still put it right.
A DIY attempt does not rule out a professional job. We remove it and do the joint properly, so just mention it when you contact us.
Do you need external mastic in Innerwick?
Many joints fail because they were sealed too deep or with nothing behind them. Sealant bonded to three sides has nowhere to go and rips as the joint opens.
The most common problems we see are:
- Leaking joints around cladding and façade panels
- Water getting into walls through failed joints
- Old sealant gone brittle and cracked
- Weeds or debris growing in open joints
For landlords with property near Dunbar station, failed wall and movement joints let damp in, so they’re worth checking between tenancies.
Before you book anyone
- What the quote includes, VAT included or not
- Who does the work, and how experienced they are
- Whether they seal over old material or remove it
- What happens if the job turns out different
Why act early in Innerwick
An open joint keeps letting water into the wall with every downpour. In cold weather, frost can damage wet brick and render near the open joint, so the problem grows beyond the joint itself. In an older home around Innerwick, damp from a failed joint can get into timber and plaster.
Combining jobs into one visit usually makes better use of the time than several visits, so it’s worth mentioning everything you’d like done. We will give you a clear price for the lot.
Why choose Mr Mastic in Innerwick
- Neat joints and a tidy finish
- Anti-fungal sanitary silicone in wet areas
- 4.9 on Google from 180+ five-star reviews
- Colour agreed with you before any work starts
Towns and villages near Innerwick
Also in Innerwick
The process
Our applicators work methodically: protection first, then preparation, sealing and a tidy-up. For most jobs that takes a few hours to a few days, depending on the length of joint and the access. For a place like Innerwick, longer drives are planned in advance. Mention tracks, gates, ferries or anything else about the route.
- We start by walking round the building and agreeing the joints and the access.
- Every bit of old sealant and any mortar or debris is cut out.
- Joint faces are cleaned back and primed if the sealant needs it.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
How to prepare
- For indoor joints, keep the area dry beforehand if you can
- Let us know about earlier repairs to the joints
- Plan for the work area to be out of bounds to pets and children
Getting a quote
We quote each job on its own, so start by telling us what you need. Simply send an email to info@mrmastic.co.uk and describe the job, and pictures are welcome.
Related advice
Your questions about external mastic in Innerwick
Does the coastal weather in Innerwick affect outside sealant?
Coastal homes put outside sealant through more weather than inland ones, so preparation and the right sealant matter all the more. Walls facing the sea are normally the first to need attention.
Is Innerwick within the area you cover?
Yes, smaller places are covered as well as towns. Our work covers the whole of Scotland. Just mention lanes, gates or anything else about the route when you book.
What does external mastic cost?
We do not publish prices, because the cost depends on the job: its size, the old material, access and the product needed. You will get a clear quote before work begins.
When is the sealant fully cured?
Most sealants are touch-dry well before they’re fully cured. We will tell you how long to leave the joint before we leave.
How often do external joints need resealing?
It varies from wall to wall: joints on exposed walls or with a lot of movement age sooner. Check them each year and reseal when they split or harden. Every job carries our one-year guarantee.
Which products do you use?
We choose the sealant for the joint, not the other way round. Where it moves, gets wet or faces the weather makes a difference, and we will explain our choice.
Where do you work from?
We work from Crawley. We cover Innerwick and the rest of East Lothian, along with the rest of our area.
How long does external mastic take?
Typically it takes anything from a few hours to several days, depending on the building. Bigger jobs take longer, and we will say how long yours will take.
Outside joints around Innerwick
Innerwick 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 movement joints and outside wall joints, which can dry out and crack sooner where a building faces the weather. Harled (roughcast) walls are common in Scotland, and joints where harling meets other materials need a sealant that can grip and flex.
Homes close to Innerwick Parish Church include some older properties, and the joints between older walls, newer extensions and the roofline need a sealant that can move.
Innerwick is about 13 miles east of Haddington, in East Lothian. Whether you’re in the middle of Innerwick or further out, external mastic is available for homes and businesses alike. Across East Lothian, we cover 48 places, Innerwick among them. There’s also a page for Edinburgh, about 29 miles away.
We work across EH42 for external mastic and the streets around it. If you need external mastic at a property on Back Lane, Manse View and Kirk Brae or anywhere close by, our applicators can take on the job. If you’re just outside Innerwick, we cover Broxburn (3 miles north-west), Spott (3 miles west), Cockburnspath (4 miles south-east), Dunbar (4 miles north-west) and Cove (4 miles east). Within a short drive, we also cover Haddington (13 miles west), North Berwick (13 miles north-west), Gullane (15 miles west) and East Linton (8 miles west).
What’s near Innerwick
The nearest railway station is Dunbar station, roughly 3.8 miles north-west. Well-known places in the area include Innerwick Castle (0.9 miles east) and Belhaven Hospital (4.3 miles north-west). Green spaces nearby include Doon Hill and Pease Dean.
What sealant work cannot fix
To be straight with you, some problems need a different trade:
- Rising or penetrating damp from elsewhere in the wall
- Render that is blown, hollow or coming away
- Movement that is more than a sealant joint can take
Not sure which it is? You can email us at info@mrmastic.co.uk and we’ll tell you honestly.
Where we work in Innerwick
- Copings & trims
- Brickwork movement joints
- Joints between brick and frames
- Concrete & block
- Façade panels
- Render & cladding joints
Surface by surface
Concrete and blockwork
Big joints in concrete need careful depth control. Backing rod sized to the joint sets it.
Brickwork movement joints
Vertical joints in long brick walls let the brickwork expand without cracking. They’re resealed over backing rod with a low-modulus sealant.
Work for landlords, hotels and businesses
We also work for businesses, from offices to washrooms and kitchens. For commercial premises, we can talk through working times when we quote.
Water getting past a failed joint can damage the building, which matters even more when someone else lives there. Resealing at the right time is simple maintenance.