Our work carries a guarantee from invoices made after January 2019 which is valid for 6 months from the date of the work completed. Your invoice is your reference for your guarantee.

Full terms and conditions regarding your guarantee, are clearly stated on the back of our invoices and on the website.


Our work is covered by a 6 month guarantee against faulty workmanship.


Materials supplied by New Line Construction will be covered by manufacturers’ warranties.


Manufacturer’s warranty for the boilers ranges from 1-7 years depending on the make of the boiler.


Some work/repairs that has been carried out may not be able to be guaranteed, and will be marked on your invoice in the non-guaranteed box.

Contact Us

Problems arising from our workmanship within the 6 month guarantee period will be dealt with as a priority.

Please contact our friendly and helpful staff with all relevant information regarding the problem. Please quote your invoice number and the date work was carried out.

Tel: 02087 071009


Post: Customer Services, 3 Shortlands, Hammersmith, London W6 8DA