01 · Project overview

What is this project?

University Roof Waterproofing in Huancayo with Impermax Polyurea H Flex, 1,100 square metres in 2024. Latam. The products on the job are Impermax Polyurea H Flex. Latam is the setting, and the exposure is what chooses the build-up.

So the crew replaced it with Impermax Polyurea H Flex, a hot-spray polyurea membrane we make.

As a result, the slab needed a new waterproofing layer.

Meanwhile, the roof carries plant rooms, stairs and a canopy, so the membrane had to follow many details.

Krypton Chemical supplies the resin system. The duty is ordinary and strict: keep water, wear and weather on the right side of the structure, and do it in the details as well as in the open field.

ProjectUniversity Roof Waterproofing in Huancayo with Impermax Polyurea H Flex
PlaceLatam
Area1,100 m²
Year2024
LineWaterproofing
ProductsImpermax Polyurea H Flex

02 · The challenge

What did this structure ask of the system?

A roof is a field of outlets, laps and edges, and the weather works on all of them. Water does not leak through the middle of a sound bay. It gets in where the detail was thin or where the deck has started to move.

University Roof Waterproofing in Huancayo with Impermax Polyurea H Flex has to be closed as one system, details first, and then left to do its job without a second visit every summer. Across 1,100 square metres, a thin spot is not a small repair.

Crew grinding the old roof concrete with diamond tools, UTP Huancayo
Crew grinding the old roof concrete with diamond tools, UTP Huancayo

03 · The solution

Which system was trusted here?

The system trusted here is the one named for the job: Impermax Polyurea H Flex. It is chosen because it matches the substrate and the exposure, not because every building wants the same can.

On a roof the membrane has to follow outlets and upstands at the same thickness as the field. An exposed aromatic film takes a topcoat if the colour will be seen.

04 · Application

How is the system built?

The products named for University Roof Waterproofing in Huancayo with Impermax Polyurea H Flex are applied as one build-up, details before the field. Outlets, edges and changes of plane are closed first, with the same materials as the main area. A system that changes product at the difficult line is a system with a future peel.

The line is Impermax Polyurea H Flex. The deck is dry, the temperature is inside the range that product allows, and the next coat follows while the window is open. Leaving a detail for the following week is how these jobs come back.

On University Roof Waterproofing in Huancayo with Impermax Polyurea H Flex the roof fails at the edge long before it fails in the field. Parapets, outlets, plant plinths and laps are detailed first, with the same system, at the same thickness. A bay can be perfect and the ceiling still stains if the outlet was a collar of mastic.

The deck moves between the hot afternoon and the night. The membrane has to move with it. A rigid coat maps every crack in the substrate onto the ceiling. Thermal movement is the reason an elastic system is on a roof like this, not a preference for a particular can.

Where the film stays in the sun, colour and waterproofing are two layers. The membrane keeps the water out. An aliphatic coat keeps the appearance. Skipping the topcoat because the membrane is already waterproof is how a sound roof starts to look failed, and then gets recoated for the wrong reason.

05 · Results

What does a job like this stand behind?

University Roof Waterproofing in Huancayo with Impermax Polyurea H Flex has one standard. The coating is still doing its job after the building is back in use, at the details as well as in the middle. The area on this job is 1,100 square metres.

Figures for cure, thickness and strength, where they are given, come from the product data sheets. They are not a test cut out of this building.

What this asks of University Roof Waterproofing in Huancayo with Impermax Polyurea H Flex is workmanship at the difficult line. The open field is the easy part of a resin job. Outlets, edges, penetrations and changes of plane are where thickness goes missing, and where water or wear finds the gap. The same products and the same care belong there, and the cure is allowed to finish before the building goes back into use. That is the difference between a coating that was simply applied and a system that stays in service.

06 · Products

Products on this job

Impermax Polyurea H Flex

Named on this project. The data sheet carries the application window and the typical figures.

Technical data sheet

07 · FAQ

Frequently asked questions

Where is this project?

University Roof Waterproofing in Huancayo with Impermax Polyurea H Flex. Latam

When was the work done?

2024.

Which products were used?

Impermax Polyurea H Flex.

Why are the details done first?

Outlets, upstands and joints are where water gets in. They are closed with the same system as the main area.

Are the figures measured on this job?

No. Thickness, elongation and cure times quoted here are the products’ typical data.

08 · Photos

On site

University roof waterproofing in Huancayo: finished grey polyurea membrane on the UTP roof
University roof waterproofing in Huancayo: finished grey polyurea membrane on the UTP roof
Crew grinding the old roof concrete with diamond tools, UTP Huancayo
Crew grinding the old roof concrete with diamond tools, UTP Huancayo
Workers repairing slab defects near the roof stairs, UTP Huancayo
Workers repairing slab defects near the roof stairs, UTP Huancayo
Crew spraying Impermax Polyurea H Flex on the university roof, Huancayo
Crew spraying Impermax Polyurea H Flex on the university roof, Huancayo
Grey roof membrane beside the canopy structure, UTP Huancayo
Grey roof membrane beside the canopy structure, UTP Huancayo
Operator and dust extractor working along the roof fence, Huancayo
Operator and dust extractor working along the roof fence, Huancayo
Worker on the part-ground slab with the plant rooms behind, UTP roof
Worker on the part-ground slab with the plant rooms behind, UTP roof
Workers washing the prepared roof with the city behind them
Workers washing the prepared roof with the city behind them
Two workers preparing the slab by the rooftop plant rooms
Two workers preparing the slab by the rooftop plant rooms
Brooms clearing dust from the slab ahead of the membrane
Brooms clearing dust from the slab ahead of the membrane
Completed roof membrane along the solar shading frames
Completed roof membrane along the solar shading frames
Even grey membrane under the arches of the roof canopy
Even grey membrane under the arches of the roof canopy

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