We can provide professional advice on drainage matters for any project and regularly work with architects and engineers to help them design the most efficient and cost effective systems possible; this can be from finding solutions to flooding problems, through to full construction development plans.

At G N Brewer Ltd we can take on technical hillside and difficult terrain jobs that many other drainlayers choose to avoid. Some of these jobs can also be very labour intensive and as we have a good number of staff, we can put many hands on the job to get it done as efficiently as possible. Due to our experience in hillside work and our good reputation, we regularly find ourselves asked to remedy hill drainage and pumps that have been installed incorrectly.

As our staff base is made up mostly of registered drainlayers who complete work according to the New Zealand Building Code we can guarantee that your drains will be laid correctly, with maximum speed and efficiency. We believe in the philosophy of 'do it once, do it right' and we only use 100mm sewer grade pipe, not the cheaper 90mm varieties. We will provide you with a free quote for your project and we are always happy to meet you on site to discuss your requirements.

We are a Christchurch City Council approved contractor and a large part of our business is installing new laterals; also known as sewer and stormwater drains that connect out to the main Council drain in the road. We also install new laterals for numerous other local drainlaying companies. We ensure a cost effective and efficient result to your project due to our experience and equipment access. We can meet you on site to discuss your requirements and provide you with a quote.

Using our latest technology Porta-Burst Pipe Bursting machine, we are able to relay existing lines in Restrain PVC pipe or HDPE, with as little digging as 2 x 1m square holes and relay lines up to 45m long. With this new technology we can relay lines under houses, garages, driveways and landscaped areas with minimal disruption to the affected area. Speak to our knowlegable team about this service for your needs.

Our Pipe Doctor repair system is a lining system where we can reline the inside of the pipe by entering further along the line, feeding the Pipe Doctor down the line and installing a patch lining. This is an ideal solution for fixing small areas which may be under the floor slab, new concrete driveways, or where it is not desirable or possible to dig up the surface.

With our latest technology colour CCTV video camera we can view your drainage lines, track and locate our camera head to give you an exact reading of the pipe position and depth. This is ideal for marking out problem areas to ensure only the specific problem area is excavated. Pipe Location services also allow for tracking existing lines where there are no records available, so they can be put on a mapping plan for future reference and construction.

When it comes to repairs and alterations; for the team at G N Brewer Ltd, no job is too big or too small for us to complete. We can repair any damaged or faulty sections of pipe for you, from waste pipes to large mains. We regularly do work ranging from 1m repairs to a full drain relay project. We guarantee that all our jobs are undertaken and run by registered drainlayers; contact our team for your quote. 

We have excellent knowledge of pumping systems for both sewer and stormwater lines. Available for both repairs and new installation, have our expert team consult and construct the right pump system for your requirements.

Our truck mounted water-blasting unit is ideal for clearing silt, fat build-up or other debris from your drains as well as cleaning up any mess once the job is completed. Speak to our knowledgeable team about the waterblasting assistance you require.