Greater London · England
Floor & skirting joints in Northwood, Greater London
Sealing skirting-to-floor joints, tiled floor movement joints and concrete floor joints for Northwood, backed by a one-year guarantee. Call for a quick quote.
- Dirt and water collecting in open floor joints
- Gaps at thresholds between rooms
- Tiled floors with no room to move
Joints and finishes in Northwood homes
Across Greater London, floors range from older suspended timber floors to concrete slabs in newer homes and commercial units, and each moves in its own way. The joint at the skirting or threshold has to allow for that. Many of London’s new homes are flats in bigger developments, where snagging may go through the developer or managing agent.
For buildings such as Emmanuel Church, floor and skirting joints in halls and kitchens wear like any others. For landlords with property near Carpenders Park station, a tidy floor and skirting joint helps a rental look ready for the next tenant.
Northwood is about 3 miles south-east of Rickmansworth, in Greater London. From the centre of Northwood to the outskirts, floor joint sealing is available for homes and businesses alike, from flats and houses to offices and hotels. Across Greater London, we cover 764 places, Northwood among them. Our London page covers work nearby, about 16 miles away.
Every address in HA6 is within our area for floor joint sealing. If you need floor joint sealing at a property on Little Stream Close and Sandy Lodge Way or a nearby road, our applicators can take on the job. Other places close to Northwood include Eastbury (1 mile north-east), Moor Park (1 mile north-west), Batchworth Heath (1 mile west), Batchworth (2 miles north-west) and Holywell (2 miles north). We also work in nearby towns such as City of Westminster (14 miles south-east), Marylebone (14 miles south-east), Kensington (12 miles south-east), St Pancras (14 miles south-east), Hampstead (11 miles south-east) and Ruislip (3 miles south).
What’s near Northwood
Typical jobs here are in homes near King George V Playing Fields, The Gate Public House and London School of Theology and the streets around them. The nearest railway station is Carpenders Park station, roughly 1.7 miles north-east of the centre. Well-known places in the area include Harlequin Centre (2.9 miles north-east) and Heath Robinson Museum (2.2 miles south-east). For a walk, there’s Dews Farm Sand Pits and Tumbling Bay.
About our floor joint sealing in Northwood
In kitchens and bathrooms, the joint where the floor meets a bath panel, plinth or skirting takes mop water every day. A flexible silicone seal keeps it out so water and dirt can’t get in. Common call-outs are for gaps between floors and kitchen plinths and perimeter joints in tiled floors filled with grout, on wet room & bathroom floors, skirting boards and concrete floor joints.
From brand-new flats to converted terraces with new flooring, London has every kind of floor. Wherever a floor meets a wall, a skirting or a threshold, the joint has to allow for movement.
All our work comes with a 12-month guarantee.
- Place
- Northwood (HA6)
- Region
- Greater London
- Cover
- One year on every job
- Price
- A clear price before we start
- Telephone
- 0345 464 0079
- Page updated
- 26 October 2026
Northwood: your questions answered
Do you work for landlords with property near Carpenders Park station?
Yes, we work for letting agents and landlords. Just ring 0345 464 0079 or send us an email and tell us about the property, and we’ll send you a clear quote.
Do you cover Northwood for floor joint sealing?
Yes. We work across London and the South East, and Northwood is part of that. Just ring 0345 464 0079 or drop us an email with a few details of the job, and we’ll send you a clear quote.
Can I add another job to the visit?
Yes. Tell us about everything you’d like done.
Do you hold any approvals?
Yes. Mr Mastic is an ARBOMaster approved applicator.
Do you have insurance?
Yes. Mr Mastic is fully insured, and we’ve been doing sealant work for more than 20 years.
Can sealant along the skirting be painted?
It depends on the sealant, so let us know first. We use a paintable flexible sealant on joints you plan to paint and wet areas get silicone.
Where are you based?
Our base is in Crawley, West Sussex, and we work across South East England, London and Scotland.
What causes gaps between the floor and skirting?
Floors and walls move a little with the seasons, and new floors settle. We close it with a flexible sealant that moves with the floor.
What happens on the day
Good joint work is mostly preparation, so that’s where we spend the time. Joints are cleaned back and dried before anything new goes in. In total, it normally takes a morning or an afternoon for most homes. Parking in much of London is by permit or pay-and-display, so it helps to know what’s near you in Northwood. It helps if you can point us to a visitor permit or a bay close to the door.
- We start by looking at the floor, the gap and the traffic, then choose the product.
- Old caulk, grout or sealant is removed from the joint.
- The joint is vacuumed clean, with backing fitted wherever depth matters.
- The sealant goes in, chosen for the floor and coloured to suit it.
- We tool the joint neatly and tell you when it can be walked on and cleaned.
Preparing for the visit
- Keep children and pets away from the work area
- Mention any sign-in or site rules at work premises
- Clear the area around the work
Getting a quote
Want a quote for floor joint sealing? Please ring 0345 464 0079 or drop us an email with a few details. We will explain what we’d do and give you a clear quote before any work starts.
Related advice
Work for landlords, hotels and businesses
Letting agents often deal with us directly. Send the address, what’s needed and the access arrangements.
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 go on one quote.
Quotes for floor joint sealing in Northwood
We quote each job individually. These are the things that affect it:
- Mould in or behind the old joints
- The number of rooms or windows
- Which sealant suits the joint
- Access and height
Commercial jobs are quoted on the same basis as homes: the amount of work, the access and the products needed, along with when we can work on site. Ask us for a quote and we’ll explain what it covers.
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:
- Whether it’s a home or a business
- If someone has resealed it before
- Photos by email, if that’s easy
- What the problem is, such as mould, gaps, leaks or cracking
There’s no standard price list, as no two jobs are quite the same. Instead, we give you a clear price for your job. To arrange one, phone 0345 464 0079 or email us.
DIY sealant or a professional job?
Sealing over old silicone is the commonest DIY error. Silicone doesn’t stick to old silicone, so it peels away and traps moisture behind it. 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 call for the right materials, safe access and experience.
When it is not the sealant
Before you book, it’s worth knowing the limits too:
- Movement too big for a sealant joint
- Subfloor problems that need a flooring contractor
- Failed waterproofing under a wet room floor
Not sure which it is? You can call 0345 464 0079 or email us and we’ll tell you honestly.
What we seal
- Wet room & bathroom floors
- Skirting boards
- Commercial floors
- Concrete floor joints
- Thresholds
- Tiled floors
What we are called out for in Northwood
Floors and walls move a little with the seasons. Heating dries timber and opens gaps along the skirting, then close again in damper months.
Most people get in touch after spotting something like this:
- Chipped and open joints in warehouse floors
- Gaps between floors and kitchen plinths
- Grout cracking in a straight line across a floor
- Floor edges that trap water and grime
As a London address, Northwood can be tricky for parking: tell us about permits, visitor bays or off-street space when you book.
What your quote should include
- When the joint can take water or movement
- Whether they’re fully insured
- Is VAT in the price?
- How the surfaces are prepared before sealing
Places near Northwood
More services for Northwood
Different surfaces, different methods
Thresholds
Where a tiled floor meets timber or carpet, the joint takes movement from both sides. A flexible sealant bridges them.
Concrete floor joints
Sawn joints in concrete floors control where it cracks. They’re resealed with a product chosen for what runs over them.