East Lothian · Scotland
Window Mastic in Haddington
Specialist window mastic for Haddington: careful preparation, the right product and tidy work. Ask us for a quick quote.
- Draughty joints inside around the window
- White mastic on grey or black frames
- Draughts coming in around windows and doors
About our window mastic in Haddington
Over two decades of sealing frames has taught us which products suit which walls. We are ARBOMaster approved and fully insured, and we give a one-year guarantee on the work. We work on patio & French doors, uPVC windows and window sills, and people most often call us about cold air getting in at the frame edge and gaps left after new windows were fitted.
Harled walls are common in Scottish towns like Haddington, and the joint between a frame and rough harling needs a sealant that can grip and flex. A thin bead that hasn’t been worked into the surface soon lets water behind it.
Whatever the size of the job, it’s backed by our 12-month guarantee.
- Where
- Haddington (EH41)
- Wider area
- East Lothian
- Cover
- 12 months on all our work
- Quote
- A clear quote up front
- info@mrmastic.co.uk
- Page updated
- 26 October 2026
What happens on the day
Most of a good job is in the preparation, and we don’t rush it. Every joint is cleaned and dried before new material goes in. All told, the work takes a morning for a couple of windows and a door. A visit in Haddington needs three things planned: access, parking and where the work is. Outdoor jobs need a dry day, so they can move if the weather turns.
- Each frame is looked over and we agree which ones need resealing.
- We remove the old mastic and clean the frame edge and wall.
- Deep gaps get closed-cell backing rod to set the depth.
- A flexible exterior sealant is applied in a colour to suit the frame.
- Every joint is tooled smooth and checked before we leave.
Before we arrive
- Mention any sign-in or site rules at work premises
- Tell us about any previous sealing or DIY attempts
- Tell us if parking is tricky
How to get a quote
For window mastic in Haddington, drop us a line at info@mrmastic.co.uk. A short description of the job and where it is helps us quote, and we’ll agree the price before any work begins.
Advice
DIY sealant or a professional job?
If you do try it yourself, take your time over the preparation: take out all the old sealant, make sure the joint is clean and dry, and give it the full cure time. If it does not work out, we can still put it right.
Too much sealant is as bad as too little. A thick, smeared bead looks untidy and doesn’t move well, and the joint depth matters as much as the finish.
Aftercare tips
Once the sealant has cured, a few habits help it last:
- Make sure the drainage slots are not blocked
- Don’t use solvent cleaners on the joint
- Keep timber frames painted
- Check the mastic once a year
Keep the new mastic undisturbed while it cures, for as long as we advise. Do not point a pressure washer at the joints.
On timber windows, water behind the joint can lead to rot. Rotten timber needs a joiner, not a sealant, so early resealing is worth it.
Landlord and commercial work in Haddington
We work for letting agents and landlords as well as householders. Sealant work between tenants is a simple way to keep a property in good order before the next move-in.
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.
Haddington homes and the weather
Private landlords in Scotland must meet the Repairing Standard, which includes keeping a home wind and watertight, and sound outside sealant is part of that. Historic houses like Gosford House (about 4.6 miles north-west) are a reminder that the area around Haddington has older buildings as well as new. In older buildings, older timber frames in brick or stone need a different approach from a modern uPVC window.
Managing a site like Knox Academy? Then its window and door frames need their mastic kept sound, just like a home’s. If you live in an older home near West Parish Kirk and Tower, frames set in older brick or stone need a sealant that suits the wall as well as the frame. Rented homes near Drem station change hands often, and cracked frame mastic tends to show up as a draught or damp complaint, so it’s worth checking between lets.
Haddington is about 16 miles east of Edinburgh, in East Lothian. Anywhere in EH41, we cover window mastic for homes and businesses. Haddington is one of 48 towns and villages in East Lothian we cover for window mastic. Our Edinburgh page covers work nearby, about 16 miles away.
Every address in EH41 is covered for window mastic. Window mastic is available to properties on Station Road, High Street and Market Street. With the A199 and A6093 close by, Haddington is easy for our applicators to reach for window mastic. Close by, we work in Dovecote (1 mile south-west), Bolton (2 miles south), Athelstaneford (3 miles north-east), Gladsmuir (3 miles west) and Drem (4 miles north). We also work in nearby towns such as Musselburgh (10 miles west), Dunbar (11 miles east), Tranent (6 miles west), North Berwick (7 miles north), Prestonpans (8 miles west) and Cockenzie and Port Seton (7 miles west). Being one of East Lothian’s larger places, Haddington has every kind of property, from flats to offices.
Near you in Haddington
Around Haddington, our work takes us to homes and buildings near Plough Tavern. The closest station to Haddington is Drem station, about 3.5 miles north. Well-known places in the area include Roodlands General Hospital (0.5 miles west) and Barnes Castle (2.1 miles north-east). The countryside around Haddington includes Skid Hill.
Other services in Haddington
FAQs for Haddington
Is there a guarantee on window mastic in Haddington?
Every job comes with our 12-month guarantee, wherever it is. We are fully insured, and an ARBOMaster approved applicator.
Can you help a landlord with a rental near Drem station?
Yes. We work for landlords and letting agents as well as homeowners, and several properties can be quoted together. Just email us at info@mrmastic.co.uk with the address and what needs doing, and we’ll send you a clear quote.
When is the sealant fully cured?
Different products cure at different speeds, so follow the cure time we give you when we finish.
Should I try DIY first?
That depends on the joint. Work at height, movement joints, fire-rated gaps and large areas are best left to a professional.
Where do you work from?
Mr Mastic is based in Crawley. Our applicators cover Haddington, along with the rest of our area.
Will there be a smell?
Possibly a little. It fades as the sealant cures.
Do you have sealant for grey or black windows?
Yes. Grey and black frames get grey or black sealant, and wood-effect frames generally suit brown.
What do you need from me for a quote?
A short description and the location, plus pictures if you have them. We’ll ask anything else we need to know.
How the job changes by surface
Timber windows & doors
Wood swells when it’s wet and shrinks when it dries, so the joint must stay flexible. We seal onto sound, dry paintwork or timber.
Patio & French doors
Water at the foot of a door frame isn’t always the mastic: worn seals, blocked drainage slots or a poor threshold detail can be the cause. We look for the cause first.
When it is not the sealant
We will not take on work that won’t last, so these are the limits:
- Misting between the panes of a double-glazed unit (that needs a new unit)
- Soft or decayed wood in the frame
- Draughts through the window seals rather than the frame
If you are not sure, just email us at info@mrmastic.co.uk and we’ll give you a straight answer.
Joints and surfaces we work on
- Window sills
- Timber windows & doors
- Composite doors
- uPVC windows
- Patio & French doors
- Aluminium frames
Leave it or put it right?
Choosing the product is half the job. Interior caulk and bathroom silicone are not made for exterior frame joints. A low-modulus exterior sealant keeps its stretch through hot and cold weather. If you live in a flat in Haddington, failed sealant can send water to the neighbours below, which turns a small job into a bigger one.
Leaving a failed joint usually makes the job bigger, not smaller. If you are unsure, email us at info@mrmastic.co.uk and we will give you an honest view and a quote.
Why choose Mr Mastic in Haddington
- Full insurance on every job
- Trusted Arbo and Everbuild sealants
- A sealant colour to suit the surroundings
- Over 20 years’ experience