(Seeking comments on quotes for) Drainage repairs (Ed.)

[gaz1234]

Hi

I’ve just bought a new property that is c100 years old. I’ve had all the relevant surveys carried out, which to my mind isn’t really that great. They pointed out a few things but they also missed some. But that’s another story.

Roll back a few months and after a few viewings I noted a drain at the rear of the house which was blocked. The vendors didn’t have much interest, but I persisted and got a company out to check and unblock.

Thereafter I’ve had two more there to get opinions, as the first one couldn’t get one drain cover up and failed to find another out the front.

Here are some of the reports and quotes:

1.
Drainage Report

Date of Inspection: Monday, 17th May

Inspection Summary:

1. Full Descale: Conducted to clear debris and scale buildup in the drainage system.
2. Specific Areas Assessed:
   • 3m upstream from MH1
   • 10m downstream from MH2
   • 4m upstream to gully near MH2
   • 4m upstream to SVP with two lateral cuts identified
   • Spot dig area in the garden.
   • 4m upstream from spot dig.
   • 1.5m downstream from spot dig.
   • 4m upstream from MH3.
   • 4.8m downstream from MH3.

Findings:

• Structural Issues Identified:
  • Cracks throughout the system.
  • Displacements at various joints.
  • Dropped joints reducing system functionality.
  • Evidence of root ingress causing obstructions and further structural compromise.

Proposed Solution:

To address these issues, the installation of 46 meters of 110mm CIPP (Cured-In-Place Pipe) Structural Fix Liner is recommended. This method will repair cracks, seal displacements, and prevent further root ingress, restoring the integrity of the drainage system.

Quote for Proposed Works

Scope of Work:

• Install 46 meters of 110mm CIPP structural fix liner across all affected sections.
• Pre-installation cleaning and preparation (including descale and debris removal).
• Removal of roots and sealing of all displacements and cracks.
• Post-installation CCTV inspection to verify installation and functionality.

Estimated Cost: £6,260 + VAT

Total with VAT (20%): £7,512

10 year guarantee on works

Let me know how you would like to proceed

Sorry its long. Wanted some suggestions around the queue involved, in particular the lining they’re proposing.

Thanks v m

 

[gaz1234]

quote 2

Following our engineers visit this morning, please see the quotation below:

Lead engineering team on site for 2 days

Removal of current manhole, located on the paving slabs

Reinstallation of manhole cover and frame

Full system descale

Root removal on affected runs

Installation of 4-inch CIPP Structural liner from MH1 to base of PVC stack (Running under the property)

MH1 downstream to MH2 including lateral cut

MH2 downstream to boundary

MH2 upstream to base of stack

MH2 upstream to base of downpipe

MH3 downstream to downpipe

MH3 upstream to base of stack

Before and after footage

10 year guarantee

Our on site price for the work is £6,195.00+VAT. We are able to honour this price until Monday 19th May 2025. After this time period the price will increase to £6,995.00+VAT.

As mentioned on site, a 50% deposit is required before commencement of the remedial works, the outstanding balance will be due on completion.

Our team are available to complete the remedial works on Wednesday and Thursday next week.

 

[gaz1234]

Quote 3

Inspection Summary:

1. Full Descale: Conducted to clear debris and scale buildup in the drainage system.
2. Specific Areas Assessed:
   • 3m upstream from MH1
   • 10m downstream from MH2
   • 4m upstream to gully near MH2
   • 4m upstream to SVP with two lateral cuts identified
   • Spot dig area in the garden.
   • 4m upstream from spot dig.
   • 1.5m downstream from spot dig.
   • 4m upstream from MH3.
   • 4.8m downstream from MH3.

Findings:

• Structural Issues Identified:
  • Cracks throughout the system.
  • Displacements at various joints.
  • Dropped joints reducing system functionality.
  • Evidence of root ingress causing obstructions and further structural compromise.

Proposed Solution:

To address these issues, the installation of 46 meters of 110mm CIPP (Cured-In-Place Pipe) Structural Fix Liner is recommended. This method will repair cracks, seal displacements, and prevent further root ingress, restoring the integrity of the drainage system.

Quote for Proposed Works

Scope of Work:

• Install 46 meters of 110mm CIPP structural fix liner across all affected sections.
• Pre-installation cleaning and preparation (including descale and debris removal).
• Removal of roots and sealing of all displacements and cracks.
• Post-installation CCTV inspection to verify installation and functionality

Estimated Cost: £6,260 + VAT

Total with VAT (20%): £7,512

10 year guarantee on works

Let me know how you would like to proceed

 

[gaz1234]

Apologies for the terrible formatting the forums creating

 

[Harry Bloomfield]

Always get at least three quotes, when an expensive amount of work is involved.

 

[stevie888]

1 & 3 look an awful lot alike.

Insitu lining is a common remedial approach where the pipe is too deep to conveniently dig out (or under structures). What it won't do is correct any joint misalignment or goive any indication of the cause.

Without more information is difficult to comment further but my preference would always be replacement.