Aberdeenshire · Scotland
Newtonhill External Mastic
Sealing brickwork movement joints, render, cladding and façade joints for householders, landlords and businesses in Newtonhill. Fully insured, ARBOMaster approved and guaranteed for a year.
- Rigid filler in a joint that should flex
- Hard, crazed mastic that has stopped moving
- Joints where the bead has come unstuck
What affects the cost of external mastic
Your quote is based on your job. We look at:
- The type of sealant required
- When we can work, for business premises
- Whether the work is at height
- Whether old sealant or filler has to be cut out
The cost reflects the work involved, not guesswork. That’s why we ask a few questions first.
What to tell us for a quote
A few details help us give you an accurate quote. When you get in contact, it helps to mention:
- Whether it’s a home or a business
- Whether it has been sealed before
- A few pictures by email, if you can
- What the problem is, such as mould, gaps, leaks or cracking
For a quick quote, get us on the phone, or email us if that is easier. Describe what needs sealing and we’ll explain what’s involved.
How we handle external mastic in Newtonhill
Ground-floor and low-level joints are straightforward to reach. For joints higher up, give us some details of the building and we’ll confirm what’s needed to reach them safely. Typical jobs include water getting into walls through failed joints and panel joints letting water in, across joints between brick and frames, concrete & block and render & cladding joints.
Outside joints can only be sealed when they’re dry, so work in Newtonhill depends on the weather, and longer journeys are planned in advance. Let us know about access to every wall and roofline.
Whatever the size of the job, it’s backed by our one-year guarantee.
- Place
- Newtonhill (AB39)
- Region
- Aberdeenshire
- Cover
- 12 months on all our work
- Price
- A clear quote up front
- info@mrmastic.co.uk
- Updated
- 26 October 2026
Can I do it myself?
Some sealant jobs are within reach of a careful DIYer, such as a straightforward joint indoors. The common mistakes are sealing over old sealant, sealing a damp joint and using far too much.
Not every job suits DIY: high-level joints, fire-rated gaps, external movement joints and big jobs call for the right materials, safe access and experience.
How to look after the new joints
No joint lasts for ever, but care makes a real difference. A few tips:
- Keep soil, plants and ivy away from the joints
- Show decorators and builders where the movement joints are
- Ask before painting over external sealant
- Act on the first splits you see
Keep the joints clear of soil, plants and climbing growth. Anything that holds water against the joint wears it out sooner.
If you can see gaps, plants or bare sections in a joint, have it checked. Early work is quicker and leaves a better finish.
What we do, step by step
When we get to you, we compare the joints with what we discussed. If we find something unexpected, we talk it through with you first. After that, the work takes a few hours to a few days, depending on the length of joint and the access. Outside jobs in Newtonhill need a dry day, because sealant won’t bond to a wet joint, so external jobs may need to move if the day turns wet. Work indoors is not affected.
- We start by walking round the building and agreeing the joints and the access.
- We cut out the old mastic and rake out anything in the joint.
- The faces are brushed clean and primed where the product requires it.
- Backing rod sized to the joint goes in to set the depth.
- We apply the sealant, tool it and check the whole run.
Getting ready for the visit
- Mention any parking rules near the property
- On commercial sites, let us know about site rules
- Plan for the work area to be out of bounds to pets and children
How to get a quote
Need a quote? Please send an email to info@mrmastic.co.uk and tell us about the job. You’ll know what we plan to do, and what it will cost, before any work begins.
Advice
What external mastic looks like in Newtonhill
Newtonhill 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. That’s hard on movement joints and outside wall joints, especially on the side facing the sea. Plenty of Scottish homes have harled walls, and joints where harling meets other materials need a sealant that can grip and flex.
If you let a flat or house near Portlethen station, split movement joints are easy to miss on a rental until damp shows inside. If you look after a building such as Portlethen Academy, its movement joints, gutters and trims need looking after like any other building’s. In the older streets around Saint Ternan's Church, older walls, gutters and the joints where extensions meet them need a flexible sealant.
Newtonhill is about 9 miles south of Aberdeen, in Aberdeenshire. Wherever you are in the AB39 postcode area, we cover external mastic for homes and businesses. Across Aberdeenshire, we cover 161 places, and Newtonhill is one of them. There’s also a page for Aberdeen, roughly 9 miles from Newtonhill.
Jobs for external mastic in AB39 is quoted and booked the same way as anywhere else. If you need external mastic at a property on St Crispin's Road, Elsick Place and Newtonhill Road or a nearby road, our applicators can take on the job. Nearby, we also carry out external mastic in Muchalls (1 mile south-west), Cammachmore (1 mile north), Chapelton (1 mile west), Portlethen (2 miles north) and Portlethen Village (2 miles north-east). Larger places within reach include Westhill (10 miles north-west), Stonehaven (5 miles south-west), Banchory (13 miles west), Inverbervie (14 miles south) and Elrick (10 miles north-west).
Near you in Newtonhill
The nearest railway station is Portlethen station, roughly 2.2 miles north-east of the centre. A little further out are Kincardine Community Hospital (5.2 miles south-west) and Cowie Castle (4.2 miles south). Not far away are Portlethen Moss and Hill of Muchalls.
Surface by surface
Render joints
Water behind render can lead to blown patches. Resealing the joints early keeps water out and protects the render itself.
Concrete and blockwork
Big joints in concrete need careful depth control. We size the backing rod to the gap so the sealant is not too deep.
What happens if it’s left?
Mortar or ordinary filler might look like a quick way to close an open joint, but it locks the joint solid. The movement then cracks the brickwork or render nearby. A flexible sealant over backing rod is what the joint needs. When the nearest tradesperson is a drive away, it’s tempting to leave a small leak, but water through a failed joint keeps working away until it’s fixed.
There are no prices on our website, because the cost depends so much on the job itself. Call for a quick quote.
Why book with us
- Anti-fungal sanitary silicone in wet areas
- 4.9 on Google from 180+ five-star reviews
- Over 20 years’ experience
- Old sealant always removed completely
Your questions about external mastic in Newtonhill
Does the coastal weather in Newtonhill affect outside sealant?
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.
Can you help a landlord with a rental near Portlethen station?
Yes. We work for landlords and agents as well as householders. You can send an email to info@mrmastic.co.uk with the details for a clear quote.
How long does external mastic last?
It varies with how exposed the wall is and how much the joint moves. Look for splits, hardening or edges coming away.
Are you insured?
Yes. Mr Mastic is fully insured.
Do you remove the old sealant?
Yes. Sealing over old sealant is the main reason resealing fails early, and it’s something we never do.
Do you come to Newtonhill?
Yes. From our base in Crawley, we cover South East England, London and all of Scotland.
How do you reach high-level joints?
Each building is different. Send us pictures and a rough idea of the height and we’ll confirm how they can be reached safely.
Can a movement joint be filled with mortar?
No. Cement or mortar can’t stretch and the joint fails. Where a joint has been mortared, it can often be raked out and sealed properly.
Places near Newtonhill
Other services in Newtonhill
Work for landlords, hotels and businesses
Mouldy or split sealant often shows up at the end of a tenancy, and it’s quick to put right between tenancies. Several properties can be quoted together.
For anyone letting property in or around Newtonhill, jobs at different addresses can go on one quote. Just tell us the addresses and what each one needs, and pictures by email help.