Hertfordshire · England
Window Mastic in Broxbourne
Mastic around window and door frames, sills and patio doors for homeowners, landlords and businesses in Broxbourne. Fully insured, ARBOMaster approved and guaranteed for a year.
- White mastic on grey or black frames
- Rushed sealant from a window installation
- Draughts coming in around windows and doors
Aftercare tips
No joint lasts for ever, but care makes a real difference. Our tips:
- Keep paint and stain on wooden frames in good order
- Don’t use solvent cleaners on the joint
- Keep jet washers away from the mastic
- Make sure the drainage slots are not blocked
Keep sill grooves and drainage slots clear, so water can run away instead of sitting against the joint.
Look out for the warning signs: split or missing mastic, gaps, damp patches inside or black mould on the reveal. If you notice one, it’s time to get the joint looked at.
About our window mastic in Broxbourne
The new joint does not have to be white. White, brown, anthracite grey, black and clear sealants are all available, so the line suits the frame instead of standing out. If you are dealing with untidy mastic left by window fitters and black, perished sealant on frames, we can put it right, on uPVC windows, composite doors and patio & French doors alike.
Homes around Broxbourne range from older properties to newer houses, and their windows range just as widely. Each frame material needs the right sealant against the right wall.
We stand behind the work with a 12-month guarantee, so you are covered after we have gone.
- Place
- Broxbourne (EN10, EN11)
- Wider area
- Hertfordshire
- Guarantee
- One year on every job
- Price
- Quoted before any work starts
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
What happens on the day
A visit follows a simple pattern: we check the joints, protect the area around them, carry out the job and tidy away. It usually takes most of a day for a typical house, less for a few frames. A visit to Broxbourne is planned like any other: the time, the access and where to park are agreed in advance. Outdoor jobs depend on a dry day, since sealant needs a dry surface.
- We check how each frame can be reached safely.
- Old, cracked mastic is removed completely.
- The surfaces are cleaned and left dry.
- Deep voids are backed, then the sealant is gunned in.
- The joint is shaped to shed water and the area tidied.
Before we arrive
- For indoor joints, keep the area dry beforehand if you can
- Tell us about any previous sealing or DIY attempts
- Let us know about parking restrictions
How to get a quote
We quote each job on its own, so the first step is telling us about yours. Simply call 0345 464 0079 or drop us an email and describe the job, and photos are welcome.
Read more
Should I try it myself first?
The biggest DIY mistake is sealing over old sealant. New silicone won’t bond to old, so it lifts and traps water and mould underneath. All the old material has to come out first.
Some jobs are best left to a professional: work at height, external movement joints, fire-rated sealant and large areas need the right product, the right access and the right method.
Broxbourne: your questions answered
Is Broxbourne within the area you cover?
Yes, Broxbourne is covered. We work across London and the South East, from towns to the smallest places. Longer journeys are simply planned in advance.
I let a flat near Broxbourne station. Can you help?
Yes, landlords and agents are among the people we work for. You can call 0345 464 0079 or email us with the details for a clear quote.
Will new mastic stop draughts?
It will if the frame joint is the problem. We check where the draught is before any work starts.
When is the sealant fully cured?
Different products cure at different speeds, so follow the cure time we give you.
Do you work for hotels and businesses?
Yes. Hotels, offices and other businesses use us and we are fully insured.
Where are you based?
We are a Crawley-based firm, with over 20 years’ experience. Our area covers South East England, London and Scotland.
Do you take out the old sealant first?
Yes, every time. New sealant won’t bond properly to old, so the joint is cleaned back first.
Is the new sealant paintable?
Not if it’s silicone. We choose the product with your decorating in mind, so mention it when you book.
Towns and villages near Broxbourne
Other services in Broxbourne
Different surfaces, different methods
uPVC windows
The frame is cleaned with a product that will not harm the plastic, then the new bead is laid against the frame and the wall and tooled smooth.
Patio & French doors
Heavy door frames can move more than windows. A flexible sealant copes with that without cracking.
What affects the quote in Broxbourne
You’ll get a clear quote before we start. It takes into account:
- How much old sealant there is and how hard it is to remove
- The size of the job
- Access and height
- Whether there’s mould to deal with
A failed joint rarely gets cheaper to fix by waiting. If you are not sure whether it needs doing, ring 0345 464 0079 or drop us an email for an honest opinion and a quote.
What we need to know
When you call or email, it’s useful to know:
- A few photos by email, if you can
- What’s wrong with the joints now
- How many joints, rooms or windows are involved
- Where the property is
For a quick quote, get us on the phone, or send an email if you’d rather. Tell us about the joints that need doing and we will talk you through the work and send you a clear quote.
Broxbourne homes and the weather
The South East is one of the drier parts of the UK, but outside sealant still needs a dry, clean surface, so outdoor work is planned around the forecast.
If you live in an older home near Church of St Augustine, the windows may be timber, sash or later replacements, and each needs the right sealant against the wall. For landlords with property near Broxbourne station, sound mastic around windows and doors keeps out the draughts and damp that tenants notice first.
Broxbourne is about 6 miles west of Harlow, in Hertfordshire. Homes, rented property, offices and hotels in Broxbourne can book us for window mastic, old or new, large or small. Every job comes with our 12-month guarantee. Across Hertfordshire, we cover 381 places, and Broxbourne is one of them. You can also see our page for London, about 18 miles away.
We work across EN10 and EN11 for window mastic and the streets around it. If you need window mastic at a property on New Road, Cock Lane and Bell Lane or anywhere close by, our applicators can take on the job. With the A10 and A1170 close by, Broxbourne is simple for us to get to. Neighbouring places we cover for window mastic include Hoddesdon (1 mile north-east), High Leigh (1 mile north), Wormley (1 mile south), Goose Green (1 mile north-west) and Woollensbrook (1 mile north). Within a short drive, we also cover Stevenage (13 miles north-west), St Albans (13 miles west), Bishop's Stortford (11 miles north-east), Welwyn Garden City (8 miles north-west), Harpenden (15 miles west) and Cheshunt (3 miles south-west).
Near you in Broxbourne
Around Broxbourne, our work takes us to homes and buildings near The Golden Lion Inn, Barclay Park and Sheredes School. The closest station to Broxbourne is Broxbourne station, roughly 0.5 miles east. Nearby you’ll also find Barrowfield (3.7 miles north) and Lowewood Museum (0.5 miles north-east). Not far away are Cheshunt Lake and Danemead.
Landlord and commercial work in Broxbourne
A neglected joint can let water reach the structure, which is a bigger problem in a rented property. Resealing at the right time is simple maintenance that we can handle for you.
In hotels, rooms out of use cost money, so the work can be planned room by room. Hotel work is part of what we do, alongside homes and businesses.
Signs you need window mastic in Broxbourne
A lot of older mastic was never designed to stay flexible. Once it’s rigid, every bit of frame movement pulls at it, and a gap opens along one edge.
Look out for any of the following:
- Draughty joints inside around the window
- Rushed sealant from a window installation
- Draughts coming in around windows and doors
- White mastic on grey or black frames
Managing a site like Sheredes Primary School? Then the mastic around its windows and doors needs looking after like any other building’s.
What your quote should include
- Which colour the sealant will be
- Who turns up on the day
- How long the guarantee is
- Is VAT in the price?