Polyurethane Removal by Surface Planing
A coarse finish is created on the surface after removal which provides a good bond for the new coating.
No water – as all the waste goes into bags. This means there are no blocked drains to worry about.
The result again is a fast trouble free project.
PU Removal on Peninsular Hotel TST
Last modified on 2011-12-20 05:43:41 GMT. 0 comments. Top.
The roof of the Peninsular Hotel has had it’s problems with waterproofing over the years.A-Pex was called in to remove the thick coating of Polyurathane with minimum noise disturbance to the guests below.
The short film show us using a Planetary Grinder with sharp Tungsten Carbide teeth and large Diamond Segments to shred the PU and leave the tiles below intact.
A new building in Kwun Tong, Hong Kong
Last modified on 2011-12-20 05:39:44 GMT. 0 comments. Top.
A new building in Kwun Tong, Hong Kong had problems with damp rising from under the basement floors and causing the floor coating to ‘bubble.’
This video shows the quick process of floor planing and diamond grinding in which we used the Von Arx VA 30SH and a DHG 700 Planetary Grinder. As with all our projects the work is carried out in a dust free environmen.
Admiralty Car Park, Queensway
Last modified on 2008-06-13 09:06:35 GMT. 0 comments. Top.
Admiralty Car Park in Queensway has had it’s fair share of PU coatings over the years. A-Pex were contracted to remove the most recent coating that had been damaged through damp seeping through the concrete floor. Upon inspection we determined that the PU that would have to removed was as thick as a car tyre.
A special type of drum was set up on the planing machines so that it could get underneath the PU and pull it upin the same way as a carpet would be pulled up.
Shotblast was used after the removal to provide an even cleaner surface with an improved bond for the waterproof membrane and coating.
100 Texaco Road Industrial Building
Last modified on 2008-06-13 09:06:42 GMT. 0 comments. Top.
Noise was a problem for the owners of the industrial building. They had tenants in the floors above and below, and since some operating 24 hours a day a noisy job was out of the question.
Over Easter 2007, A-Pex sent in a VA 30SH machine – A 300 kg hydraulically propelled floor, equipped with a special drum that shatters each tile into small pieces. By the time the neighbouring offices returned to work after the holiday the 2600m2 job had been completed.
Surface Preperation (Shotblast)
The process is quick, efficient and creates no airborne dust – so the surface is left ready for the application of coatings.
The process will give you the best surface possible – helping you guarantee against coating failure.
It cleans and profiles concrete surfaces by removing dirt, laitance, curing compounds, sealers and other contaminants in preparation for the application of protective materials.
Surface preparation is considered the most important step of any resinous flooring application. Improper surface preparation could turn what seems to be a simple process into a lengthy, difficult repair.
Waterloo Road
Last modified on 2008-06-13 09:05:59 GMT. 0 comments. Top.
Anti Skid surfaces require vigorous preparation on concrete or asphalt before they are applied. Shotblast is the only method that can abrade the whole surface uniformly.
The photograph is of the shotblasting of asphalt on Waterloo Road in 2002. Aluminium oxide aggregate in an epoxy / bitumen mix was then applied to create an anti skid surface.
Chek Lap Kok Car Park
Last modified on 2008-06-13 09:06:06 GMT. 0 comments. Top.
At car park number 4 at Hong Kong International Airport the important issues were noise and speed. Noise because of the proximity of the Regal Hotel only metres away and speed due to the risk of rain the contractor needed to be in and out in the quickest possible time.
Working 12 hour shifts A-Pex completed the whole 6000m2 within 6 days.
Our super quiet Shotblast machine produces a maximum of 82 dBA @ 5 metres – which is not much higher that a household vacuum cleaner.
Epoxy Floor removal by Shotblast
Vacuum (or captive) steel shotblasting is very similar to sand blasting except that the shot is instantly recycled.
Shotblast is used to make a coarse surface on the concrete, asphalt or marble in preparation for the application of sealers, coatings, or polymer overlays.
Dust is kept out of the working environment 100%.
Removes existing coatings and adhesives to provide a non slip surface.
Cleans and profiles concrete surfaces by removing dirt, laitance, curing compounds, sealers and other contaminants in preparation for the application of protective materials.
Quick and comprehensive and with the minimum disruption.
This short video shows an everyday A-Pex project.
Last modified on 2010-04-19 10:23:03 GMT. 0 comments. Top.
An old Tsing Yi warehouse with multiple coatings of Epoxy.
Projects like these generally need 2 passes. First pass using heavy, large diameter steel shot. This helps break down the layers of epoxy. By slowing the machine down it is possible to remove all the layers in 1 go but this can leave an uneven finish on the concrete.
We choose to do the second pass with a lighter steel shot which removes the remainding parts of epoxy and leaves an ideal concrete surface ready for new coating.
Video
Lee On Lane
Last modified on 2008-06-13 09:51:38 GMT. 0 comments. Top.
Shun Lee Government Services Quarters in Kwun Tong has a 15,000 m2 car part with and epoxy coating. The epoxy coating had de-bonded but the carpark had to remain open.
Apex Systems (Hong Kong) Shotblast services were employed to remove the failed epoxy. We completed 750 m2 each day. The whole area was left completely coarse,clean and dust free, ready for the replacement coat of epoxy which was laid over the following two days.