Greater London · England
Sand Mastic in Hainault
Professional sand mastic in and around Hainault, with old sealant always removed completely and a one-year guarantee.
- Cracked mastic round a front door frame
- Mastic worn away on windows facing the weather
- Gaps where the frame meets the masonry
Why deal with it now?
Not every draught comes from the sashes themselves. Gaps between the frame and the wall can be just as bad, and renewing the mastic closes them. In London conversions, one flat’s bathroom is often above another flat’s ceiling, and a slow leak from a failed seal can end up in the flat below. Dealing with it early is far simpler for homes in Hainault.
Combining jobs into one visit is normally more efficient than separate visits, so it’s worth mentioning everything you’d like done. We’ll send you a clear quote for the lot.
Why us?
- Sanitary silicone with an anti-fungal additive in wet areas
- Any old sealant cut out fully, not covered over
- Fully insured
- Over 20 years’ experience
Take a look at how sealant jobs are priced or customer reviews.
How we handle sand mastic in Hainault
Silicone on a period window often looks wrong and doesn’t suit the building. Sand mastic gives a finish that matches the age of the house, and we can replace one with the other. We’re often asked to deal with draughts and rain around sash boxes and mastic that needs renewing before redecorating, across brick reveals, tenement windows and period & listed homes. Mr Mastic is a specialist sealant company, not a general handyman, which means sand mastic in Hainault is done by people who seal joints every day.
London homes have every kind of window, from timber sashes in period terraces to aluminium and uPVC in newer blocks. Over the years, the sealant around them shrinks, cracks and pulls away, which is when draughts and damp patches appear in homes in Hainault.
There’s a 12-month guarantee on every job.
- Location
- Hainault (IG6, IG7, IG8)
- Wider area
- Greater London
- Cover
- One year on every job
- Quote
- Quoted before any work starts
- Telephone
- 07833 053749
- Last updated
- 26 October 2026
Your questions about sand mastic in Hainault
Do you work for landlords with property near Seven Kings station?
Yes. We work for landlords and agents as well as homeowners, and several properties can be quoted together. Just ring 07833 053749 or email us with the address and what needs doing, and we’ll send you a clear quote.
Is parking a problem for a job in Hainault?
Parking in Hainault, as in most of London, takes a little planning: a visitor permit or a nearby bay makes the day run more smoothly.
Should I try DIY first?
For a simple, easy-to-reach joint, a careful DIYer can do a reasonable job. The usual mistakes are sealing over old sealant, sealing a damp joint and using too much.
How do I get a quote for sand mastic in Hainault?
Every job is different, so each one gets its own quote. For a quick quote, call 07833 053749 or email us and tell us what needs doing and where.
Is consent needed for window work on a listed home?
Your local planning authority is the one to ask. They decide whether consent is needed.
Do you guarantee sand mastic work?
There’s a 12-month guarantee on every job, sand mastic included.
Do you work for hotels and businesses?
Yes. Hotels, offices and other businesses use us, and we are fully insured.
Do you hold any approvals?
Yes. ARBOMaster is the approved applicator scheme for Arbo sealants, and we’re part of it.
What we are called out for in Hainault
Decorating can disturb tired mastic. Many people find it crumbling when they prepare the windows, which is a good time to renew it.
It’s worth asking for a quote if you see:
- A silicone bead on a sash window that spoils the look
- Patchy fillers round a sash window
- Gaps between timber frames and stone or brick
- Mastic that needs renewing before redecorating
Schools such as Limes Farm Junior School are buildings too, and larger buildings have plenty of frames, and the mastic around each one ages.
What to look for in a quote
- What preparation is included
- How much experience the applicator has
- Whether they seal over old material or remove it
- What guarantee comes with the work
Places near Hainault
Other services in Hainault
What happens on the day
On the day, there’s very little for you to do. Point us to the joints and we will get on with it. The job generally takes anything from a few hours to a full day, depending on how many windows. In Hainault, as in most of London, parking needs a little planning. It helps if you can point us to a visitor permit or a bay close to the door.
- We start by checking each surround and agreeing the joints to renew.
- We rake out the old mastic and clean the joint.
- Deep voids are packed so the mastic is the right thickness.
- The mastic is mixed, pressed into the joint by hand and shaped.
- The mastic is finished to sit tidily against the stone or brick.
How to prepare
- Let us know about earlier repairs to the joints
- Mention any leaks or damp you’ve noticed
- Keep children and pets away from the work area
Get a quote
If you’re in Hainault and need sand mastic, call 07833 053749 or email us. A short description of the job and where it is helps us quote, and we will agree the price before any work begins.
Advice
Aftercare tips
A little care helps the new joints last. Our advice:
- Avoid patching sand mastic with silicone
- Avoid heavy scraping on the mastic joint
- Sort the mastic before the decorators arrive
- Inspect the joints round the windows every year or so
Do not run silicone over the new mastic. If anything cracks, get it looked at before trying a quick fix.
Crumbling mastic lets rain into the joint. It can soak into the frame and the surrounding masonry so early renewal protects both.
What affects the cost of sand mastic
We quote each job individually. This is what makes a difference:
- How many areas need sealing
- The type of sealant required
- How much old sealant there is and how hard it is to remove
- Mould in or behind the old joints
The cost reflects the work involved, not guesswork. That’s why we ask a few questions first and send you a clear quote before we start.
Asking for a quote
When you contact us, these details help:
- Whether it’s a home or a business
- The rough size of the job
- If someone has resealed it before
- A few photos by email, if you can
Want a quote for sand mastic? Please phone 07833 053749 or email us with a few details. You will know what we plan to do, and what it will cost, before any work begins.
What sand mastic looks like in Hainault
London and the South East are among the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast. In a converted house or block, who looks after the windows depends on the lease, so it’s worth checking before booking.
In the older streets around St Francis of Assisi, replacement windows fitted into old openings often leave uneven gaps that need backing and a flexible joint. For landlords with property near Seven Kings station, cracked sand mastic around sash windows lets in the draughts tenants complain about.
Hainault is about 2 miles east of Woodford, in Greater London. Hainault gets the same service as everywhere we cover: the old material taken out, joints prepared properly and a 12-month guarantee. Our area takes in 786 places across Greater London, from the larger towns to small villages.
We cover every part of IG6, IG7 and IG8 for sand mastic. Local streets include Hughes Road, Neville Road and Addison Road, all of which we cover. We also cover the places around Hainault: Chigwell (1 mile north-west), Woodford Bridge (1 mile west), Woodford Wells (2 miles west), Woodford (2 miles west) and Buckhurst Hill (3 miles north-west). Further out, we also cover London (11 miles south-west), City of Westminster (12 miles south-west), Marylebone (12 miles south-west), Kensington (14 miles south-west), St Pancras (10 miles south-west) and Shoreditch (9 miles south-west).
Local landmarks in Hainault
Locally, jobs take us to homes and businesses close to Fairlop Waters, Kantor King Solomon High School and The New Fairlop Oak pub and the streets around them. For rail, the closest station is Seven Kings station, about 2.8 miles south of the centre. A little further out are Claybury Hospital (0.8 miles west) and Redbridge Museum (3.2 miles south). For a walk, there’s Hainault Lodge and Highams Park Lake.
Surface by surface
Timber door frames
Sand mastic is used round timber door frames too. The method is the same as for windows.
Brick reveals
We rake out the old mastic and pack deep voids before the new mastic goes in.
Work for landlords, hotels and businesses
Letting agents and landlords in Hainault can book us as well as householders. Resealing between tenancies keeps a property looking cared for before the next move-in.
Letting agents often deal with us directly. Tell us the address, the job and how access works.