You have two john of ' Venetian Blue ' satin paint , one label for exterior use and one labeled for interior use . Yes , both control the same pigment and have the same shininess , and yes , of course they ’re both paint . But after those two similarity they begin to differ . If it ’s been years since you ’ve take on a paint job , things have changed in the paint aisle . The alchemy behind today ’s blusher components fine - tune them for their intended use , and both manufacturers and pros recommend you practice each can as label – home paints inside and exterior key outside .
First thing first about paint : There are two canonical types of paint to choose from , water - found and oil - based . Latex and acrylic paints are urine - based , while alkyd paints are fossil oil - based , and bothinterior paintsand exterior paint come in both types . When it comes to exterior paint , oil - based is better at fend dirt , but more commonly water - ground latex paint blusher is used because it tends to be at least as or more undestroyable than crude oil - based . These outdoor - friendly paints are well suited to handle humidness , temperature changes and other outdoor factors , and they do n’t take as long to dry as alkyds . Paints devise for outdoor use contain additive that give them longevity in the elements – including resistance to cracking and malicious gossip resistance , as well as aegis from the price ultraviolet radiation ( ultraviolet light ) shaft cause . Many also have mildewcide as an additive .
Water - free-base paints are also preferred for indoor picture , and not just because of the fumes associated with oil - based paint . Instead of additive to collapse down on shite , interior paint ’s chemistry is intend to make the paint reserve up well against mule , scratches and sticking ( for example , around window physique ) . It ’s also designed to suffer cleanings ( such as polish off the evidence of a tomato plant sauce sputtering or scrubbing away a minor child ’s graphics with an alkaline cleanser ) .
additive are only one of four basic element of paint , though , and interior and exterior paints disagree when it come to the other three : pigment , binder and liquid .
Differences Between Interior and Exterior Paint Components
The want of certain surroundings - specific additive gives home paint a disadvantage when used on external surface , and the difference between midland and exterior - formulated rouge does n’t end there . difference start to emerge when you see at paint ’s other three introductory element , too : paint , binder and liquidity .
Let ’s set about with paint , which is what supply a can of paint with its color . upcountry paints may incorporate organic pigments for color , and sure types oforganicpigments are known to importantly fade if used on an exterior surface ; exterior paint formulas forfend these pigments , increase the time needed between outside paint labor .
likewise , paints are explicate with additive known as binders , which are used to bind the pigment together as well as provide adhesion to the paint surface . Because exterior rouge need more help combatting the inauspicious essence of the environment , binders used in outdoor - well-disposed preparation give the paint resistance to integrity problems such as break and chalking , as well as increase moisture control . Interior paint binders may bid better resistance from scrape , instead , which is n’t necessarily a much - needed quality in exterior paint .
Interior and exterior rouge also differ when it comes to the type of liquid used . According to federal guidelines , interior paints – specifically indoor water - based paint including rubber-base paint – are designed to hold the abject stage of VOCs ( explosive organic compound ) . VOCs are used as answer in the fluid component of paint and they vaporize at way temperature . VOCs are linked to both forgetful - term and long - term health trouble , from vexation and giddiness ( short - condition ) to respiratory disease and liver damage ( long - terminus ) . They may also be colligate with sure cancers . The EPA reports degree of VOCs may average out as much as two to five times higher inside your home compared to exterior , and the levels can increase importantly post - painting . appear for interior paints with scummy - to - no VOC levels . Because exterior paints do n’t all meet the same low - to - no spirit level of VOC requirements as key devise for midland employment ( peculiarly crude oil - free-base paints ) , in this instance it ’s important to think of never to use exterior key inside your home [ source : Environmental Protection Agency ] .
And for those who just do n’t know why this has to be so difficult , there is another option ; paint formulated to be used both indoors or out . There is such a thing as a hybrid interior / exterior - formulated blusher .
Interior/Exterior Paint FAQ
Lots More Information
If you ’re comparing a latex interior rouge against a latex outside paint , constituent may disagree . But what it really seems to come in down to for anyone not bear such close care to solvents and binder : key perform the best when we use them as they ’re mean to be used . Have an outside paint task in judgement ? select a blusher that ’s labeled as made for outside habit , and thus obviate former and excessive fading and cracking .
