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Alpa Vinyl Columns & Pillars

Name: Exterior Pro Materials
Address: Unit 5, 1235 Journey's End Cir, Newmarket, ON, L3Y 8T7, CA
Telephone: +1 (905) 836-7272

Alpa Vinyl Columns and Pillars from Mitten give your porch or entranceway the architectural presence of real wood columns — without the rot, painting, or maintenance. Manufactured by Alpa Ontario Railing Inc. using vinyl extruded in Ontario by Alpa Tech Vinyl, these columns are built to outlast wood, fiberglass, and aluminum wrap alternatives. Choose from 8"×8" square columns or 8" diameter round pillars, both available in 6- to 12-foot heights that cut on-site for a precise fit. Add decorative skirts in four heights (6", 12", 32", 42") to the top, bottom, or both ends for a fully custom look. Both profiles are load-bearing capable when fitted with the appropriate internal support. Available in White, Cashmere, and Tan — coordinated to match Alpa Railings for a seamless, polished exterior.

8" × 8" (square) · 8" diameter (round)3 colours

Request a Quote Datasheet

Warranty5-Year Limited Warranty — materials and workmanship (original purchaser only)

Available Colours

White

Alpa Colours

Alpa Colours(3)

Colours shown are approximate representations only and may appear differently on screen than the actual product. Request a physical sample before making your final decision.

About Alpa Vinyl Columns & Pillars

Alpa Vinyl Columns and Pillars are the low-maintenance solution for beautiful, long-lasting porch posts and exterior columns. Unlike wood — which rots, checks, and needs constant painting — or fiberglass, which still requires painting, or aluminum wrap, which dents and limits design options, Alpa vinyl columns require virtually no upkeep and will stand the test of time. Available in 8"×8" square columns and 8" diameter round pillars, with heights from 6 to 12 feet that can be cut on-site for a precise fit. Decorative skirts in four heights (6", 12", 32", and 42") can be added to the top, bottom, or both ends of any column to create a fully custom, architectural look. Both profiles accept load-bearing internal supports — dimensional lumber or aluminum tube — for structural applications. Manufactured by Alpa Ontario Railing Inc. (part of the Alpa Lumber Group, over 50 years in the building industry) using vinyl extruded by Alpa Tech Vinyl in Ontario. Available in White, Cashmere, and Tan to complement Alpa Railings for a coordinated exterior.

Available at Pro Materials in Newmarket, Ontario, supplying contractors, builders, and homeowners across York Region, the GTA, and Ontario. All products are available on a quote basis; contact us for wholesale pricing and current availability.

Profiles & Specifications

SQSquare Columns

Alpa Square Columns deliver classic architectural presence to any covered porch, entranceway, or pergola. Each 8"×8" column ships with a matching set of bases and accepts a load-bearing internal support (dimensional lumber or aluminum tube) for structural applications. Decorative skirts slot onto the base and/or top in 6", 12", 32", or 42" heights to add visual depth. Seamlessly compatible with Alpa Railings for a fully coordinated look. Available in White, Cashmere, and Tan.

Profile	8" × 8" square
Available Heights	6 ft to 12 ft — cut on-site to exact height
Decorative Skirts	6", 12", 32", or 42" — add to top, bottom, or both
Includes	Set of bases
Load Bearing	Yes — accepts dimensional lumber or aluminum support tube (not included)
Railing Compatible	Yes — seamless connection with Alpa Railings
Colours	White, Cashmere, Tan
Maintenance	Never needs painting; will not rot or dent

RDRound Pillars

Alpa Round Pillars bring a timeless, clean aesthetic to porches and covered entrances. The 8" diameter round profile suits most residential porch designs and includes a matching set of bases. Like the square column, the round pillar accepts a load-bearing internal support for structural installations — using either laminated 2"×4" dimensional lumber or an aluminum support tube. Available in White, Cashmere, and Tan.

Profile	8" diameter round
Available Heights	6 ft to 12 ft — cut on-site to exact height
Includes	Set of bases
Load Bearing	Yes — accepts dimensional lumber or aluminum support tube (not included)
Colours	White, Cashmere, Tan
Maintenance	Never needs painting; will not rot or dent

SKDecorative Skirts

Alpa Decorative Skirts are architectural accent sleeves that slide over the base and/or top of any Alpa column or pillar to instantly elevate its visual character. Available in four heights — 6", 12", 32", and 42" — they can be combined at both ends of a column for a fully dressed look. Finished in the same colours as the column lineup for a perfect match.

Available Heights	6", 12", 32", 42"
Application	Bottom, top, or both ends of column/pillar
Compatible With	All Alpa Square Columns and Round Pillars
Colours	White, Cashmere, Tan

Specifications

Square Columns

Model	Size	Available Heights	Load Bearing
8" × 8" Square Column	8" × 8"	6 ft – 12 ft (cut on-site)	Yes (with internal support)

Includes set of bases. Internal support (dimensional lumber or aluminum tube) not included. All fasteners to be non-corrosive quality, supplied by installer.

Round Pillars

Model	Size	Available Heights	Load Bearing
8" Diameter Round Pillar	8" diameter	6 ft – 12 ft (cut on-site)	Yes (with internal support)

Includes set of bases. Internal support not included. All fasteners to be non-corrosive quality, supplied by installer.

Decorative Skirts

Height	Application
6" Skirt	Bottom, top, or both
12" Skirt	Bottom, top, or both
32" Skirt	Bottom, top, or both
42" Skirt	Bottom, top, or both

Compatible with all Alpa Square Columns and Round Pillars. Pre-assembled trim collar and mounting plate for ease of installation.

Order quantities and lead times may vary. Contact us for availability.

Certifications & Testing Standards

Alpa Vinyl Columns & Pillars meets or exceeds the following Canadian and international performance standards.

Test / Property	Standard	Result / Value
Manufactured by Alpa Ontario Railing Inc. — part of the Alpa Lumber Group (50+ years in business)	-	Certified
Vinyl extruded by Alpa Tech Vinyl — proudly Canadian, manufactured in Ontario	-	Certified
Distributed through Mitten Building Products / Cornerstone Building Brands	-	Certified
5-Year Limited Warranty — materials and workmanship (original purchaser only; not transferable)	-	Certified
Visible damage claims must be submitted within 10 days of purchase	-	Certified
Other defect claims must be submitted within 30 days of discovery (within 5-year period)	-	Certified

Installation Guide

Determine whether the installation is load-bearing or non-load-bearing before beginning. Non-load-bearing installations do not require an internal support. Load-bearing installations MUST use an internal support — either dimensional lumber (laminated 2"×4") or an aluminum support tube.
MEASURING — LOAD BEARING: Measure the overall vertical opening height. Cut dimensional lumber 1" shorter than the overall height. If using an aluminum support tube, cut it 1-1/8" shorter than the overall height. Cut the vinyl column 2-1/4" shorter than the overall height — this places the entire load on the internal support and allows for thermal expansion.
MEASURING — NON-LOAD BEARING: Measure the vertical opening and cut the column to the required length.
SKIRT PRE-ASSEMBLY (Square Column): The mounting plate, trim collar, and skirt sleeve are pre-assembled. If received as separate pieces: attach the trim collar to the skirt sleeve using 1/2" screws through the 4 tabs on the trim collar. Attach the mounting plate to the other end of the sleeve with at least 2 screws. Without a skirt: snap the trim collar and mounting plate directly into place.
ASSEMBLY — SQUARE COLUMN: Slide the vinyl column along with the dimensional lumber or aluminum support tube into the bottom mounting plate assembly. If using dimensional lumber, centre it on the mounting plate. If using an aluminum support tube, ensure the support washers are inserted into the mounting plates before assembly. Attach the top mounting plate assembly to the internal support.
ASSEMBLY — ROUND PILLAR: Slide the column over the internal support and attach the remaining mounting plate to it. For non-load-bearing: assemble the top and bottom mounting plates with the column.
FINAL INSTALLATION: Set the completed assembly in place. Attach the mounting plates to the porch deck/ceiling using non-corrosive screws — one screw per corner. Cover all screw holes with cap plugs, gluing them in place.
All fasteners must be non-corrosive quality. Fasteners are not included and must be supplied by the installer.
CARE & CLEANING: Ordinary dirt and mud usually washes off with a garden hose. If needed, use a non-abrasive household cleaner to remove residue, then rinse thoroughly with a hose. Never use abrasive cleaners or pressure washers on vinyl columns.
WARRANTY CLAIMS: Claims for visible damage must be submitted in writing within 10 days of purchase. All other defect claims must be submitted in writing within 30 days of discovery, provided the 5-year warranty period has not expired. Include a description of the defect and proof of purchase. Contact: Alpa Ontario Railing Inc., 101 Glidden Road, Brampton, Ontario L6T 3W6 | Tel: (905) 796-6631 | inquiries@mittenbp.com