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Southern View: May 06, 2021

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SOUTHERN VIEW Latest Canterbury news at starnews.co.nz<br />

Thursday <strong>May</strong> 6 <strong>2021</strong> 9<br />

HOME & HEATING<br />

Ground moisture barrier<br />

under low sub-floor<br />

Now with the colder and wetter weather on<br />

its way, home owners are focusing on ways<br />

to make their homes comfortable, warm<br />

and healthy for their families throughout<br />

winter. Rising damp is an issue that affects<br />

many of our older properties which suffer<br />

from poor, or no, ground moisture barrier.<br />

In Canterbury especially, post-quake, many<br />

people have relocated to homes that suffer<br />

from rising damp which can be associated<br />

with health problems. Independent tests have<br />

shown that up to 40 litres of water can rise<br />

from the ground and enter a house every day,<br />

leading to mildew, mould, condensation and<br />

musty smells. Moulds can produce various<br />

allergic reactions and the frail, elderly and<br />

very young are especially vulnerable.<br />

Canterbury Foam Concrete Ltd is a<br />

locally owned and operated firm. The team<br />

understands the problems caused by rising<br />

damp and are there to help. They will come<br />

to your damp home and pump a lightweight,<br />

flowable foam concrete under your timber<br />

floored home.<br />

While insulation is important, it has been<br />

recognised that it is dampness that is the real<br />

villain in the house. The new Healthy Homes<br />

Standards introduced by the government<br />

effective from the 1st July 2019 now has<br />

a requirement to install ground moisture<br />

barriers, a key element in the armory to fight<br />

moisture in the home.<br />

Dr Larry Bellamy BE (hons) PhD in a<br />

report dated 1988: Foam Concrete Under<br />

Timber Floors: An Energy Analysis assessed<br />

the effects of placing Foam Concrete over<br />

damp soil and had this to say: Condensation<br />

on the underside of a timber floor can occur<br />

where the floor is suspended over damp<br />

ground and the inside air temperature falls<br />

close to the crawl space air temperature.<br />

Much energy is required to vaporize moisture<br />

that penetrates the structure. By avoiding<br />

underfloor condensation, foam concrete can<br />

reduce floor heat losses by up to 90%.<br />

• Canterbury Foam Concrete Ltd can in most<br />

cases, install a Ground Moisture Barrier<br />

under the suspended wooden floor of your<br />

home, even when there is no crawl space.<br />

• BRANZ Appraised; Appraisal Number 961<br />

• Members of the Insulation Association of<br />

New Zealand.<br />

• We offer a free measure and quote in the<br />

Canterbury region with no obligations.<br />

• Assessments can be made in all other<br />

regions by arrangement.<br />

Contact Canterbury Foam Concrete<br />

Ltd now for your free, no obligation quote<br />

and complimentary appraisal of your<br />

underfloor ground moisture barrier needs.<br />

Phone 03 376 4608, 0508FOAMCO or www.<br />

foamconcrete.nz for more information.<br />

What makes a great<br />

heat transfer system?<br />

There are a number of Heat Transfer<br />

systems on the market. Smooth-Air<br />

ventilation specialists offer a range of HTU<br />

Heat Transfer Units with carefully selected<br />

components to optimise the system:<br />

They use insulated duct to transfer<br />

the heated air with as little heat loss as<br />

possible. The fan moves sufficient air<br />

for the distance and number of rooms,<br />

without being noisy. The diffusers send<br />

the heat to the floor, not to skim the across<br />

the ceilings. All components are good<br />

quality - designed to operate for years<br />

without problems.<br />

Smooth-Air’s HTUs come in a range<br />

of options: One to four rooms, with or<br />

without thermostat and with a choice<br />

of grilles and diffusers. HTUs improve<br />

energy efficiency in your house, as you are<br />

using excess heat. They have low power<br />

consumption - only 80watts for the three<br />

room system. Circulating air<br />

through the house also reduces<br />

the risk of damp.<br />

You can also choose the HTU<br />

version with downjet diffusers,<br />

which throw the warm air<br />

downwards to the floor. These<br />

downjet diffusers can also be<br />

adjusted to regulate which room<br />

receives the most warm air.<br />

An average size living room<br />

requires 2-4 kw of heating, yet<br />

appliances such as log burners<br />

generate heat in the region of 10<br />

-20kw. This leaves an excess of 8<br />

-16kw of heat which sits at high<br />

level in the heated room, usually above<br />

door level.<br />

Heat transfer units work best where very<br />

hot air has ‘stratified’ into a layer near the<br />

ceiling. So heat pumps, which circulate<br />

warm air around the room with no<br />

layering, are not suitable as a heat source<br />

by themselves. However, if you have both<br />

log burner and a heat pump, heat transfer<br />

systems with thermostat can work very<br />

well: The heat pump stops operating once<br />

the heat from the fire has heated the room,<br />

and the heat transfer kicks in above this<br />

point, once there is a layer of hot air at the<br />

ceiling.<br />

Contact Smooth-Air on 0800<br />

SMOOTH (0800 766 684) to ask how<br />

they can help you with your Heat<br />

Transfer, as well as any other ventilation<br />

requirements.<br />

ATTACK RISING DAMP<br />

Smooth-Air<br />

Ventilation Equipment Suppliers<br />

to<br />

trade<br />

&<br />

retail<br />

Smooth-Air also has a wide range<br />

of ventilation equipment to bring<br />

fresh air into your home.<br />

T. 03 376 4608 E info@foamconcrete.nz<br />

W. www.foamconcrete.nz<br />

Domestic<br />

Commercial<br />

Industrial<br />

HEAT PUMP<br />

SALE NOW ON!<br />

Amazin’ autumn Specials!!<br />

90%<br />

SubSidy<br />

Warmer KiWi HomeS<br />

Programme<br />

*Eligibility criteria apply<br />

• We will offer you the best quality brands and<br />

option of heat pump for your home/business<br />

• Providing Heat Pump solutions for over 19 years to Cantabrians<br />

• We personally guarantee all our products & installs for 5 years<br />

(providing annual maintenance has been completed)<br />

Phone us today for your free consultation & quote<br />

41A SHAKESPEARE RD, WALTHAM<br />

PHONE 03 366 0525<br />

www.enviromaster.co.nz<br />

“A local team for local people”<br />

0800 SMOOTH<br />

(0800 766 684)<br />

sales@smooth-air.co.nz<br />

Transfer<br />

the excess<br />

from your<br />

log burner<br />

to your bedrooms<br />

264 Annex Rd<br />

Riccarton<br />

Christchurch<br />

03 343 6184<br />

heat<br />

Monday - Friday<br />

7.30am - 5pm<br />

www.smooth-air.co.nz

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