Essex · England
External Mastic in Chase Cross
Our applicators work in Chase Cross on sealing brickwork movement joints, render, cladding and façade joints. Old sealant removed completely, joints prepared properly and a one-year guarantee.
- Weeds or debris growing in open joints
- Failed sealant between panels on a façade
- Cracked joints where brick meets render or frames
What external mastic looks like in Chase Cross
Historic houses like Hare Hall (about 2 miles south-east) are a reminder that the area around Chase Cross has older buildings as well as new. In older buildings, older walls and rooflines need a sealant that moves with them and suits the material. Rainfall in the South East is lower than in much of the UK, though outdoor sealant still has to go onto a dry joint, so the forecast decides the day.
For site and facilities teams at buildings such as Bower Park Academy, larger buildings have long runs of movement joint that eventually need resealing. If you let a flat or house near Gidea Park station, outside joints that have cracked can let damp into a rental, so check them between lets.
Chase Cross is about 2 miles north of Romford, in Essex. We provide external mastic to homeowners, landlords and businesses in Chase Cross, as part of our work across Essex. Chase Cross is one of 644 places in Essex where we work for external mastic. Our London page covers work nearby (14 miles or so).
Jobs for external mastic in RM5, RM1 and RM4 works the same way as everywhere else we cover. Streets in the area include Merlin Road, Avelon Road and Vernon Road, and we cover them all. If you are just outside Chase Cross, we cover Havering-atte-Bower (1 mile north-east), Redbridge (2 miles west), Stapleford Abbotts (2 miles north), Lambourne End (3 miles north-west) and Chigwell Row (3 miles west). Further out, we also cover Basildon (12 miles east), Harlow (12 miles north), Brentwood (6 miles east), Billericay (11 miles east), Loughton (6 miles north-west) and Wickford (15 miles east).
Landmarks near Chase Cross
We work in homes and buildings around Colley Rowe Inn, Clockhouse Primary School and Havering Country Park. For rail, the closest station is Gidea Park station, about 2.1 miles south-east. Well-known places in the area include Romford Shopping Hall (1.8 miles south) and Harold Wood Hospital (2.3 miles south-east). For a walk, there’s Bedfords Park.
How we handle external mastic in Chase Cross
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. If you’re dealing with sealant pulling away from one side of the joint and plants rooting in failed movement joints, we can put it right, whatever the surface.
Around Chase Cross, garages, outbuildings and extensions all add to the joints on the outside of a home. Leaks generally start at a gutter end, a garage door frame or where an extension meets the house.
Our work is backed for twelve months, in Chase Cross and everywhere else we cover.
- Place
- Chase Cross (RM5, RM1, RM4)
- Region
- Essex
- Cover
- One year on every job
- Price
- Quoted before any work starts
- Call
- 0345 464 0079
- Updated
- 26 October 2026
Nearby places to Chase Cross
More services for Chase Cross
Aftercare tips
Looking after new joints is easy, and it makes a real difference:
- Show decorators and builders where the movement joints are
- Check the sealant is paintable before painting near it
- Act on the first splits you see
- Check external joints each spring
Do not let soil, plants or ivy build up against the new joints. Anything that holds water against the joint wears it out sooner.
Small splits are the time to act. At that stage it’s a simple cut out and reseal with no damage behind it to deal with.
How the visit works
You do not need to clear the whole room or building before we come, only the area right around the joints. We protect the rest, and the work takes anything from a few hours to several days, depending on the building for a typical job. Parking around Chase Cross is usually easier than in a town centre, but mention any lanes, gates or long drives. If the job is outside, tell us about side access and how high the joints are.
- First, the joints are inspected and the access agreed.
- Every bit of old sealant and any mortar or debris is cut out.
- The faces are brushed clean and primed where the product requires it.
- Backing rod sized to the joint goes in to set the depth.
- The exterior sealant is applied, tooled and checked along its length.
Getting ready for the visit
- For indoor joints, keep the area dry beforehand if you can
- Let us know about stairs, lifts or work at height
- Mention any leaks or damp you’ve noticed
Getting a quote
It all starts with a short chat. Describe the problem, the location and the size of the job, and we’ll explain how we’d tackle it. When it suits you, phone 0345 464 0079 or send us an email.
Advice
What the job involves on each surface
Render joints
Rendered walls have joints at beads, openings and changes of material. They’re resealed in a sealant that suits the render.
Cladding and façade panels
Metal and composite panels move a lot with temperature, so the joints work hard every day. We choose the product to suit.
For landlords and businesses
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 we plan the work room by room around your bookings where we can. We’ve worked in hotels as well as homes and businesses.
FAQs for Chase Cross
Is Chase Cross within the area you cover?
Yes, smaller places are covered as well as towns. Our work covers London and the South East. Let us know about access, parking and anything unusual about getting there when you book.
Do you cover Chase Cross for external mastic?
Yes, Chase Cross is within the area we cover. We work across London and the South East. You can ring 0345 464 0079 or drop us an email and tell us what needs doing.
Can I add another job to the visit?
Yes, we can. More than one area can be quoted together.
Are you fully insured?
Yes. Mr Mastic is fully insured, with over 20 years’ experience in sealant work.
Why do you put foam in the joint first?
Closed-cell backing rod sets the depth of the sealant and stops it sticking to the back of the joint. Then the sealant bonds to two faces and can move.
How long does external mastic last?
That varies with the weather the wall faces, how much it moves and the sealant used. Sealant is a maintenance item, so check the joints once a year and renew it when it starts to fail.
Will there be a smell?
Sometimes, a little. It fades as the sealant cures.
Should I try DIY first?
Sometimes. The key is preparation: remove all the old material and work on a clean, dry joint. If it doesn’t work out, we can redo it.
Leave it or put it right?
Sealing over the top of old mastic does not hold for long. The new layer cannot bond properly to old, weathered material, so the old joint is cut out fully first. In a smaller place like Chase Cross, wherever a wall is exposed, a failed outside joint is a real source of damp. Inside, a split seal lets water into floors and panels just as it would anywhere.
No two jobs are quite the same, so we quote each one individually. The number of joints, how easy they are to reach and the sealant needed all play a part, and we will explain the quote if you ask.
Why book with us
- Quality sealants from Arbo and Everbuild
- Homes, businesses and hotels
- Any old sealant cut out fully, not covered over
- We are fully insured
Take a look at how sealant jobs are priced or our reviews.
What affects the cost of external mastic
For a quick quote, just ask. The main things that affect it are:
- Which sealant suits the joint
- The size of the job
- Mould in or behind the old joints
- Whether the work is at height
Leaving a failed joint usually makes the job bigger, not smaller. If you’re not sure whether it needs doing, call 0345 464 0079 or drop us an email for an honest opinion and a quote.
What to tell us for a quote
A few details help us give you an accurate quote. When you ask for a quote, tell us:
- The problem you’ve noticed
- A few pictures by email, if you can
- Any previous sealing or DIY work
- Access, such as stairs, a lift or height
There’s no standard price list, as no two jobs are quite the same. Instead, your job gets its own clear quote. To arrange one, ring 0345 464 0079 or send us an email.
Do you need external mastic in Chase Cross?
Joints sealed without backing rod, or far too deep, rarely last. If the sealant sticks to the back as well as the sides, it cannot stretch and rips as the joint opens.
Keep an eye out for these signs:
- Rain getting behind render or cladding at a joint
- Failed sealant between panels on a façade
- Rigid filler in a joint that should flex
- Brick movement joints where the sealant has split
If you live in an older home near St James, the joints between older walls, newer extensions and the roofline need a sealant that can move.
What to look for in a quote
- How much experience the applicator has
- What insurance they hold
- How long to leave it before use
- Which sealant they’ll use, and why