The Mastic Doctor team standing beside their branded vans outside an office building
Greater London · England

Mastic Sealing in Arkley

Mastic sealing for building owners, managing agents and housing associations across Arkley, by CSCS-carded applicators. Fully insured and CHAS accredited.

  • Brittle perimeter mastic across a building
  • Complaints coming in block by block
  • Failed external movement joints
1
Send details
Tell us about the site, with photos if you have them.
2
Get a quote
One fixed quote covering the agreed scope.
3
We seal
CSCS-carded applicators, the right product for each joint.
4
Guaranteed
Backed by a 12-month workmanship guarantee.
Covering the South East & Scotland
Constructionline member
£5m public liability

Mastic sealing in Arkley

Photos, a specification or a quick description of the joints is enough to start a fixed quote.

About our mastic sealing in Arkley

We work for building owners, landlords with commercial or block portfolios, managing agents and housing associations. A planned, building-by-building programme often works better than reacting to each complaint, with each block quoted and scheduled in turn. If you’re dealing with mastic failing across several blocks on an estate and draught complaints from residents or tenants, we can help. Sealant contractors, mastic applicators, sealant specialists: whatever the job title on the order, the work in Arkley is the same: failed joints cut out, faces prepared and the right sealant laid to the right depth.

Across Greater London, Arkley included, the ULEZ applies, and parking and loading rules differ from street to street. For block-wide work, a place to park and store materials saves time on every visit.

Our 12-month guarantee is about workmanship, not wear and tear. How long a sealant joint lasts depends on movement, exposure, cleaning and use, so we spell out the cover before we begin.

Where
Arkley (EN5, NW7)
Region
Greater London
Guarantee
12 months on our workmanship
Price
A fixed quote before we start
Call
01277 525 020
Updated
3 November 2026
The Mastic Doctor team beside their liveried vans in front of an office building

Mastic sealing in Arkley: the local picture

Five care or nursing homes sit less than 2 miles from Arkley. Owners of care premises can bring window and door mastic into a phased programme planned around the home. London blocks come with residents to inform, access to agree and often a concierge or estate office to work with. Our programme follows the access you agree with residents.

Churches, halls and community buildings such as St Peter's Church are looked after by trustees and committees like any other owner, and their frames, doors and external joints need mastic renewed in time. If you look after a block within reach of Elstree & Borehamwood station (2.1 miles west of Arkley), frame and balcony mastic can be renewed on one programme. Schools and community buildings such as Whitings Hill Primary School need frame and external mastic kept sound like any building.

Arkley is about 2 miles west of Barnet, in Greater London. Our applicators travel to Arkley for work on mastic joints. Arkley is one of 764 places in Greater London on our list. We also cover London, around 12 miles from Arkley.

If you need mastic sealing in EN5 and NW7, the process matches everywhere else we work: details, then a fixed price, then sealing and a 12-month guarantee. For a building on Well Road, Glebe Lane and Brett Road or nearby, we can quote for mastic joints. You’ll find Arkley on or near the A411. We also cover Rowley Green (1 mile north-west), High Barnet (1 mile north-east), Hadley (1 mile north-east), Totteridge (2 miles south-east) and Well End (2 miles north-west). Bigger towns within reach include London (12 miles south-east), City of Westminster (10 miles south), Marylebone (10 miles south), Kensington (10 miles south), St Pancras (10 miles south-east) and Shoreditch (11 miles south-east).

Local landmarks in Arkley

Recent enquiries here include premises near Susi Earnshaw Theatre School, Whitings Hill Open Space and Queen Elizabeth's School, among other places. Arkley’s nearest station is Elstree & Borehamwood station, about 2.1 miles west of the centre. A little further out are Hilfield Castle (4.5 miles west) and Hertfordshire Scout Museum (1.9 miles north-west). Green spaces nearby include Glebe Lane Pastures and Darland's Lake.

Map of Arkley © OpenStreetMap contributors

Quoting for work in Arkley

We price every job individually. The main factors are:

  • Location, for remote and island sites
  • Access and working height
  • Whether old sealant has to be cut out first
  • Backing rod, priming and other preparation

The specified product makes a difference, and so does the preparation. Access, phasing and site requirements come into it too.

What to include in your enquiry

Good information means a firmer quote. Helpful details to send:

  • The type of building and who uses it
  • Any dates the work must fit around
  • Photos of the joints, close up and from further back
  • Specification clauses that apply

We quote a fixed sum against the scope you give us, so you know the figure before anyone is on site. To ask for one, ring 01277 525 020 or email the details over.

What we can’t put right

Our job is the joint, not everything around it. Sealant alone won’t deal with:

  • Asbestos-containing sealant, which we don’t remove
  • Frames that are rotten, warped or broken
  • Water coming in from the roof or rainwater goods

If you’re not sure, just ring 01277 525 020 or send photos by email and we’ll give you a straight answer before you book.

Surfaces we seal

  • Communal entrances and stairwells
  • Communal kitchens and washrooms
  • Shopfronts below residential blocks
  • Balcony and threshold joints
  • Window and door perimeters on blocks
  • External wall and movement joints

Site staff or a sealant specialist?

General builders and handymen seal joints, but it isn’t their main trade. A specialist prepares properly, controls joint depth and picks a product with the right movement class, which is what makes a joint last.

The visible bead is only part of the job. Correct depth, the right primer and a sealant matched to the movement are where general trades tend to cut corners.

Common questions from Arkley clients

We manage a building near Elstree & Borehamwood station. Can you help?

Yes. Blocks of any size are within what we do. Photos of each elevation help us quote accurately.

Can you work in a London building with booked loading and goods-lift slots?

Yes, most London buildings have access rules of some kind, and we plan around them. Send the building rules and access times with your enquiry. We allow for the ULEZ, which covers every borough

Do you supply RAMS and insurance details?

Our credentials include CHAS, Constructionline and public liability insurance. Tell us what site paperwork you need (RAMS, insurance certificate, CSCS details) and we will confirm with the quote.

What guarantee do you give on resealing?

Our workmanship carries a 12-month guarantee and we hold public liability insurance.

What if the old mastic contains asbestos?

Asbestos removal isn’t part of our work. Anything suspect is tested before we carry on, and the duty to manage asbestos sits with the dutyholder.

Does the weather affect the work?

For external joints, yes. The joint has to be dry and within the product’s temperature range, so damp, frosty or very cold days can stop external work. Inside work is seldom held up.

Can you reseal a whole block or estate?

Block-wide and estate programmes are common. You get a fixed quote per building or for the whole job.

On site: what to expect

The first thing on site is a walk round with your contact, to confirm the scope, the order of work and any areas we must keep clear. Then we strip out anything that has failed, prepare every joint and seal it. In Arkley, most buildings stay in use during the work, so zones and timings are agreed with whoever manages the building. Areas are handed back as each section is finished.

  1. A building-by-building inspection lists the failed joints.
  2. The quote is fixed and split as suits you.
  3. We agree the programme and dates with you.
  4. Old mastic is removed and the joint faces prepared.
  5. New sealant goes in with backing rod and primer where needed.
  6. Each building is checked and signed off with the 12-month guarantee.

Before we start on site

  • Let us know about inductions and permits
  • Have the specification and drawings to hand
  • Share the asbestos register for older buildings

Ask for a quote

A handful of photos and a postcode is the fastest way to a quote. Upload them with the quote form, or give us a call on 01277 525 020 or email the details over if you’d rather talk the job through.

Get a quick quote

Advice

Looking after the joints

To get the most from the new sealant:

  • Make it easy for occupiers to report draughts
  • Reduce knocks to communal area joints
  • Group repairs into a planned programme
  • List the paperwork your organisation requires when you send details

Log the date and extent of the resealing for each block. That makes future programmes easier to plan and gives you a history.

Budgets are easier to plan when sealant is part of planned maintenance. We can quote buildings in priority order and work down the list.

Leave it or put it right?

Adding sealant to cyclical maintenance is an easy win. Waiting until leaks appear means working under pressure and less choice about when. Failed sealant in a building in Arkley can quickly affect neighbours, tenants or the floor below. Putting it right early is less disruptive than dealing with the consequences.

Cost follows what’s involved: removing old material, preparing the joints, the product, the access and how the work is phased. Call for a fixed quote.

Why choose Mastic Doctor in Arkley

  • Failed material removed, not covered up
  • CHAS accredited
  • Fully insured, including public liability cover
  • Colours confirmed for the specified product

See how commercial sealant jobs are priced and our accreditations and insurance.

Accreditations

Trusted. Accredited. Insured.