Decks, Fences, and Arbours A dedicated, detail-oriented approach to outdoor construction. Johnston’s Greenhouse offers crews with years of experience building decks and patios for your home construction. From natural and treated woods to long-lasting and easy-maintenance synthetics, we use premium quality materials that will blend seamlessly with your home and complement the beauty of your outdoors. And we back all our construction work with a full guarantee. Our custom woodworking includes: Arbours Pergolas Trellis and fences Decking wood and composite Contact us today to get started on your project!