Find the leak. Prepare the pipe. Coat the interior.
Start at the mould-stained kitchen ceiling. Upstairs, the basin and linear shower drain feed separate inlets of a round inspection chamber with a tile-finished cover. Its 50 mm outlet runs directly to the 110 mm stack, with a pipe crack and a 4/2 tee connection defect. All equipment enters through that inspection chamber.
Silent demonstration. Play, pause, or move between the stages. Full description of the demonstration
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From the damp ceiling to the whole system, then the access chamber.
The film starts at the mould-stained kitchen ceiling. A wide cutaway shows the stack descending to the sewer chamber, the vent above the roof and the separate WC connection. An overhead cutaway reveals the underfloor routes, then the intact floor returns before the access cover opens. Upstairs, the basin and wall-side linear drain feed separate 50 mm inlets into the round inspection chamber. Its straight 50 mm outlet enters the 110 mm stack through a 4/2 tee connection. The cutaway is illustrative, without floor demolition. Damp bedding and concrete lie directly below the crack and open joint.
The camera enters through the inspection chamber to examine the defects.
The camera enters the pipe through the existing inspection chamber. The cutaway shows its route without opening the floor. It moves slowly and pauses at the crack and the open 4/2 tee connection, underneath and to the left. Short forward and backward passes show the wall and connection. The CCTV window shows the same area from inside the pipe.
Prepare the 50 mm waste with a rotating cable head.
After isolation and suitability assessment, a flexible drive cable carries a PICOTE Smart Cutter head with thin red abrasive panels into the branch. Side and trailing views show it removing grease and loose deposits and gently keying the surface without cutting sound plastic. Head size and abrasive action require site-specific selection; the line is rinsed afterwards. Circumferential abrasion marks form with the rotating panels and remain on the prepared wall behind the head.
The blower connects at the inspection chamber and dries the complete branch.
The SPRAYPOXY blower stays outside the pipe. Its wide air hose connects at the access opening; no drying head travels down the pipe and no CCTV inset is shown during drying. Arrows in the cutaway illustrate airflow.
Internal repair — first layer, without breaking the floor.
Equipment enters through the existing access opening. The repair layer is applied to the internal pipe wall. Mixed epoxy repair material flows from the SPRAYPOXY MidiCoater+ mixer to the nozzle, with air from a separate compressor. The centralizer stays still. A visible spray fan reaches the wall during slow, steady withdrawal; the section and CCTV show the same coating edge. Coverage runs from the inspection chamber outlet to the stack while preserving the open passage.
Airflow between coats · the clock runs in time-lapse.
The blower runs throughout the illustrated interval while the clock advances in time-lapse. SprayCoat+ Blue specifies a 30–60 minute recoat window. The illustrated 40 minutes between passes are not a claim about full cure or site-specific conditions.
Internal repair — second layer along the same pipe section.
The head returns across the 50 mm defect area near the reducing junction. Actual pass count and final thickness depend on manufacturer instructions and the pipe assessment. The second pass covers the same complete run.
Check the 50 mm branch and reducing junction.
After the required cure, the camera slowly checks coating continuity. A subtle repaired crack trace and a small socket step remain beneath the continuous internal repair, with no open gap. The residual damp mark still needs drying and separate restoration of finishes.
From the damp ceiling to the whole system, then the access chamber.
The film starts at the mould-stained kitchen ceiling. A wide cutaway shows the stack descending to the sewer chamber, the vent above the roof and the separate WC connection. An overhead cutaway reveals the underfloor routes, then the intact floor returns before the access cover opens. Upstairs, the basin and wall-side linear drain feed separate 50 mm inlets into the round inspection chamber. Its straight 50 mm outlet enters the 110 mm stack through a 4/2 tee connection. The cutaway is illustrative, without floor demolition. Damp bedding and concrete lie directly below the crack and open joint.
The camera enters through the inspection chamber to examine the defects.
The camera enters the pipe through the existing inspection chamber. The cutaway shows its route without opening the floor. It moves slowly and pauses at the crack and the open 4/2 tee connection, underneath and to the left. Short forward and backward passes show the wall and connection. The CCTV window shows the same area from inside the pipe.
Prepare the 50 mm waste with a rotating cable head.
After isolation and suitability assessment, a flexible drive cable carries a PICOTE Smart Cutter head with thin red abrasive panels into the branch. Side and trailing views show it removing grease and loose deposits and gently keying the surface without cutting sound plastic. Head size and abrasive action require site-specific selection; the line is rinsed afterwards. Circumferential abrasion marks form with the rotating panels and remain on the prepared wall behind the head.
The blower connects at the inspection chamber and dries the complete branch.
The SPRAYPOXY blower stays outside the pipe. Its wide air hose connects at the access opening; no drying head travels down the pipe and no CCTV inset is shown during drying. Arrows in the cutaway illustrate airflow.
Internal repair — first layer, without breaking the floor.
Equipment enters through the existing access opening. The repair layer is applied to the internal pipe wall. Mixed epoxy repair material flows from the SPRAYPOXY MidiCoater+ mixer to the nozzle, with air from a separate compressor. The centralizer stays still. A visible spray fan reaches the wall during slow, steady withdrawal; the section and CCTV show the same coating edge. Coverage runs from the inspection chamber outlet to the stack while preserving the open passage.
Airflow between coats · the clock runs in time-lapse.
The blower runs throughout the illustrated interval while the clock advances in time-lapse. SprayCoat+ Blue specifies a 30–60 minute recoat window. The illustrated 40 minutes between passes are not a claim about full cure or site-specific conditions.
Internal repair — second layer along the same pipe section.
The head returns across the 50 mm defect area near the reducing junction. Actual pass count and final thickness depend on manufacturer instructions and the pipe assessment. The second pass covers the same complete run.
Check the 50 mm branch and reducing junction.
After the required cure, the camera slowly checks coating continuity. A subtle repaired crack trace and a small socket step remain beneath the continuous internal repair, with no open gap. The residual damp mark still needs drying and separate restoration of finishes.
Full description of the demonstration
A description of the two-storey illustration and repair stages, in the order shown.
From the damp ceiling to the whole system, then the access chamber.
The film starts at the mould-stained kitchen ceiling. A wide cutaway shows the stack descending to the sewer chamber, the vent above the roof and the separate WC connection. An overhead cutaway reveals the underfloor routes, then the intact floor returns before the access cover opens. Upstairs, the basin and wall-side linear drain feed separate 50 mm inlets into the round inspection chamber. Its straight 50 mm outlet enters the 110 mm stack through a 4/2 tee connection. The cutaway is illustrative, without floor demolition. Damp bedding and concrete lie directly below the crack and open joint.
The camera enters through the inspection chamber to examine the defects.
The camera enters the pipe through the existing inspection chamber. The cutaway shows its route without opening the floor. It moves slowly and pauses at the crack and the open 4/2 tee connection, underneath and to the left. Short forward and backward passes show the wall and connection. The CCTV window shows the same area from inside the pipe.
Prepare the 50 mm waste with a rotating cable head.
After isolation and suitability assessment, a flexible drive cable carries a PICOTE Smart Cutter head with thin red abrasive panels into the branch. Side and trailing views show it removing grease and loose deposits and gently keying the surface without cutting sound plastic. Head size and abrasive action require site-specific selection; the line is rinsed afterwards. Circumferential abrasion marks form with the rotating panels and remain on the prepared wall behind the head.
The blower connects at the inspection chamber and dries the complete branch.
The SPRAYPOXY blower stays outside the pipe. Its wide air hose connects at the access opening; no drying head travels down the pipe and no CCTV inset is shown during drying. Arrows in the cutaway illustrate airflow.
Internal repair — first layer, without breaking the floor.
Equipment enters through the existing access opening. The repair layer is applied to the internal pipe wall. Mixed epoxy repair material flows from the SPRAYPOXY MidiCoater+ mixer to the nozzle, with air from a separate compressor. The centralizer stays still. A visible spray fan reaches the wall during slow, steady withdrawal; the section and CCTV show the same coating edge. Coverage runs from the inspection chamber outlet to the stack while preserving the open passage.
Airflow between coats · the clock runs in time-lapse.
The blower runs throughout the illustrated interval while the clock advances in time-lapse. SprayCoat+ Blue specifies a 30–60 minute recoat window. The illustrated 40 minutes between passes are not a claim about full cure or site-specific conditions.
Internal repair — second layer along the same pipe section.
The head returns across the 50 mm defect area near the reducing junction. Actual pass count and final thickness depend on manufacturer instructions and the pipe assessment. The second pass covers the same complete run.
Check the 50 mm branch and reducing junction.
After the required cure, the camera slowly checks coating continuity. A subtle repaired crack trace and a small socket step remain beneath the continuous internal repair, with no open gap. The residual damp mark still needs drying and separate restoration of finishes.
A 3D illustration, not footage of completed work. Two coating passes are shown as an example, not a prescribed thickness or final layer count. SPRAYPOXY SprayCoat+ Blue lists a 30–60 minute recoat window; the 40-minute interval shown is illustrative and is not full cure. Open holes, active leaks and structural damage require assessment and suitable preparatory repair; coating alone must not be assumed suitable. Pass count, thickness, substrate preparation, drying, curing and tests depend on the pipe condition and product instructions.
Manufacturer specifications: MidiCoater+ · Spray head Small+ · SprayCoat+ Blue · PICOTE Smart Cutter