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Below we have
listed some common assumptions that people generally make regarding
paint. Paint is to seal and protect, not to just a simple color that
makes the item your painting look good. Unfortunately, this is the worst
and most common mistakes painters make. The following points give a
prime example of why we use paint:
- If there were no paint on your car, it would rust out very quickly.
- If there wasn't an acrylic sealer in the stucco, it would simply
fall apart.
- If BC Ferries didn’t paint the fast cat it would corrode more
of our tax dollars away.
- If your house didn’t have paint or a sealer coat it would
rot, check, crack and warp to the point of replacement every seven
years.
- To fill small voids and cracks to keep water and moisture from entering
substrate.
To make this
simple : If water can get in it will simply destroy the adhesion of
the paint thus peeling and blistering will inevitably occur.
Types of paint:
Paint seals the
surface. The more solids in the paint, the better the sealing properties
eg: less evaporation of the base. A lone exception to this rule may
be chemical reaction sealers.
Latex:
Latex is water
based and the most widely used paint today for drywall, wood, properly
primed metal, concrete walls and most properly primed int/ext wood.
Brushes & rollers can be cleaned with soap & water. Because
it is water based, it is the most environmentally friendly of these
three paints.
Alkyd:
Alkyd is solvent
based, used mostly for metals and must be cleaned with paint thinners.
Emulsion:
Emulsion is a
combination of latex with an alkyd suspension.
Paint additives:
To create smooth
even flow on your trim and slow down the drying process add 1.5 –2
oz to each 6oz of paint.
Latex:
For smoother,
fine finish work like trim, add a few oz of floetrol to your semi gloss
or gloss paint for better levelling and to rid yourself of the brush
marks.
Alkyd:
Add penetrol same
as above for desired finish.
Preparing the surface
Before you start
your paint project, it is important to note that you cannot paint Latex
paint over an previously painted alkyd product without the use of a
bridgecoat primer, eg; Kilz, undercoat enamel etc… Ask your paint
retailer if/when you are unsure.
Always test or
prime the surface you wish to paint. Failure to do so, will result in
very poor adhesion and your paint may peel off entirely. We also recommend
that you always sand the surface you are painting before and between
coats.
Water or smoke stains in
your ceiling or walls?
If you wish to
paint latex over cigarette smoke stains, water damage stains, or felt
pen marker on walls forget it! You will only be wasting your time.
Prime first! use
Kilz or other comparable stain blocking primer first. If you fail to
do so, the stain will bleed through the latex paint no matter how many
coats you apply.
Painting Plywood with latex.
The same as above
applies unless your using an alkyd base paint.
Sheen types and terminology
The location and
the degree of cleaning you need will dictate the type of gloss that
would be suited for the particular application of different sheens of
paint.
As a general rule
we use the following sheens for these common applications:
- Flat – ceilings and sometimes walls if desired
- Eggshell - bedrooms, living areas and other common
walls
- Semi Gloss – all areas which require constant
surface cleaning and a more durable finish. Good examples are the
bathroom, kitchen and laundry area walls, as well as trim, baseboards,
and doors very institutional when to common area walls.
Note: If you would
like a more durable finish but do not like the hard look of glossy surfaces
on the walls try a low sheen waterborne enamel this is a very good alternative
and will cost you 20-40% more per gallon.
Roller covers and sheens
Semi Gloss drywall/doors……use
a 5 MM roller cover
Flat and Eggshell drywall, cement ceilings use a 10mm roller cover
Exterior cement (smooth) 10mm Cover
Exterior Block 10-15 mm Cover
Exterior Stucco (smooth) 10 -15mm Cover
Exterior Stucco (Rough) 20 mm cover
Split face Block 25 mm Cover
Plywood 5-10mm cover
Exterior cedar siding/ cement board 10mm cover
Important Tip
If you are planning
to use the brush or roller again shortly or in the next few days keep
a liberal amount of paint on the brush/roller wrap it in plastic and
place it in your freezer or a cold spot, you will save time cleaning
it out everytime you break.
Brushes
Always buy a
good quality tapered brush $15.00 (cad) they clean easier and are worth
the extra $7 over a cheap one if you wish to have a quality finished
product.
Important
tip: After cleaning your brush out using an alkyd / solvent
base, store your used thinner in a sealed container, let it sit for
30 days or so. The paint solids will eventually settle leaving you with
reusable clean thinner again.
Pressure treated Lumber
Pressure treated
lumber is kiln dried wood. After a drying process, the lumber is placed
in a tank of preservatives and water. It is recommended to wait a full
year after installation before painting. The surface can then be painted
or stained like any other wood surface. Left unpainted, pressure treated
wood will still weather, crack, and warp much like untreated wood.
Caulking
Before performing
any caulking, read the label carefully. Please be cautious when purchasing
a caulking for painted areas, as not all caulking is paintable.
All caulking must
be allowed to dry thoroughly before it is painted or it may crack the
cut in paint and show through the color of the caulking.
Silicone
is not generally a paintable caulking. There are some types silicone
that are paintable but be sure to read the label carefully.
Latex
caulking is the most popular for interior and exterior surfaces although
there are many types for both applications. Some commercial caulking
is more recommended for exterior use.
Elastomeric
caulking
Used for Cement block, stucco and some brick applications.
Urethane,
polyurethane, one and two parts
These are good quality long lasting commercial sealers and are highly
recommended over latex caulking.
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